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Shrauta karmas include the elaborate activities related to Shrauta yajnas and yagas meant for the well-being of mankind. These karmas are so called because their procedures are directly based on the Srutis or instructions given in Vedas. The brahmanas contain the description of yajnas (which last for many days) and different aakhyayikas as part of the Shrauta karmas (for example Haviyagnakandam of Kanvasatapatha brahmana contains the details of Haviryajnas). However, in Kalpas the rules are methodically compiled in Sutra format without the aakhyayika part.<ref name=":1222222222">Purkayastha, Dipanjona (2014) Ph. D Thesis from Assam University : ''[http://hdl.handle.net/10603/41946 A Study of the Asvalayana srauta sutra with reference to the principal sacrifices]''</ref> Usually, Srauta karmas involve the Chaturhotr - the four priests (Hota, Adhvaryu, Udgaata, Brahma).


{{align|right|'''Nakshatra sattra Shrauta yajna

Courtesy : vAIdika bhArata'''|style=color:#d85611}}

== कल्पः ॥ Kalpa ==
Kalpas (कल्पः) mainly deal with elaborating the Vedic Yajna procedures and is classified under [[Shad Vedangas (षड्वेदाङ्गानि)|Shad Vedangas]]. The very name itself means ‘Kalpyate Samarthyate Yaga Prayogo Atra’ which means “The practice of Vedic ritual traditions are explained here”.     

Kalpa Vedanga deals with four types of sutras namely,   
* '''Shrautasutras''' : Contain procedures for performing great Yajnas (sacrifices) lasting for many days.  
* '''Dharmasutras''' : Contain spiritual and worldly laws.  
* '''Grhyasutras''' : Lay down rules for the ceremonies and yajnas involved in everyday life.  
* '''Sulbasutras''' : Practical manuals with mathematical measurements necessary for construction of yajna vedi (sacrificial altar).  
The ‘Sulbasutras’ and ‘Srautasutras’ directly deal with the performance of Vedic rituals. These texts provide guidance for the performance of Vedic yajnas. The performance of Vedic rituals is being continued even in the modern period especially in South India.<ref name=":022" />
== श्रौतसूत्राणि ॥ Shrauta Sutras ==
Shrauta, as the name suggest, refers to the texts which have been derived from the Shruti or the Vedas. The Shrauta sutras contain a very detailed, meticulously accurate and vivid description of the several yajnas that were performed in ancient times. These works were manuals compiled for the practical purpose of giving directions to those who engaged in such yajnas. They are based on ancient Brahmana texts, which they quote at every step, many individual sutras being couched in the very language of the Brahmanas.<ref name=":0">Kane, Pandurang Vaman. (1941) ''History of Dharmasastra (Ancient and Medieval Religious and Civil Law) Volume 2, Part 2.'' Poona : Bhandarkar Oriental Research Institute</ref>

The Shrauta rituals cover a whole gamut of rituals from the simplest to the most complicated. Most of them are no more practiced, but their study is useful for historical reasons. According to Prof. Radhakrishna Bhat,   <blockquote>"Most of the ‘Haviryajnas’, ‘Agnihotra’, ‘Darsapurnamasa’ and ‘Caturmasya’ yajnas, the basic ‘Somayajnas’, ‘Agnistomas’ and its varieties, and some culturally and historically important yajnas like ‘Vajapeya’, “Asvamedha’, ‘Sarvamedha’ etc are found in ‘Yajurveda’ (Adhvaryuveda). Later in ‘Puranas’ the references to Vedic rituals and practices are found. In classical Sanskrit literature some references to Vedic rituals and practices are mentioned. This shows that the Vedic ritual tradition is continued to modern period too without any interruption". <ref name=":022">Radhakrishna Bhat, N. ''[http://vedicheritage.gov.in/pdf/Vedic_tradition_karnataka.pdf Vedic Ritual Tradition of Karnataka]'', Vedic Heritage Portal.</ref></blockquote>The procedures for Shrauta karmas are compiled in Shrauta Sutras as given in the Kalpa Vedanga. Some of the Shrauta Sutras associated with particular vedas are as follows<ref name=":1222222222" />
{| class="wikitable"
!Vedas
!Srautasutras
|-
|Rig Veda
|Asvalayana, Sankhyayana
|-
|Krishna Yajurveda : Taittriya
|Baudhayana, Bharadvaja, Apastamba, Hiranyakeshi, Vaikhanasa, Vadula, Kathaka
|-
|Krishna Yajurveda : Maitrayani
|Manava and Varaha
|-
|Shukla Yajurveda
|Katyanana
|-
|Samaveda 
|Arsheyakalpa, Kshudrasutra, Jaiminiya, Latyayana and Drahyayana
|-
|Atharvaveda
|Vaitana 
|}Besides these above mentioned Srautasutras, there are many others but their texts are not available at present. The present article is based on the references of Shrauta sutras of Asvalayana, Apastamba, Katyayana, Baudhayana with occasional references to Samhitas and Brahmanas.  
== Classification of Shrauta Yajnas ==
Srauta Yajnas are 14 in number. They are divided into two main groups of seven each : Haviryajnas and Somayajnas<ref name=":1222222222" /><ref>Introduction to Rituals ([http://vedicheritage.gov.in/rituals/# Vedic Heritage Portal])</ref>.   

'''Shabdakalpadruma'''<ref>Shabdakalpadruma ([https://sa.wikisource.org/wiki/%E0%A4%B6%E0%A4%AC%E0%A5%8D%E0%A4%A6%E0%A4%95%E0%A4%B2%E0%A5%8D%E0%A4%AA%E0%A4%A6%E0%A5%8D%E0%A4%B0%E0%A5%81%E0%A4%AE%E0%A4%83/%E0%A4%AF%E0%A4%B5%E0%A4%95%E0%A4%83 See Haviryajnas under Yaga])</ref> describes the following list of Haviryajnas and Somayajnas.<blockquote>तत्र श्रौताग्निकृत्य- हविर्यज्ञाः सप्त । यथा । आग्न्याधानं तदेवाग्निहोत्रम् १ दर्शपौर्णमासौ २ पिण्डपितृ-यज्ञः ३ आग्रयणम् ४ चातुर्म्मास्यः ५ निरूढ-पशुबन्धः ६ सौत्रामणिः ७ ।</blockquote><blockquote>श्रौताग्निसप्तसंस्थाः । यथा । सोमयागः स एवाग्निष्टोमः १ अत्यग्निष्टोमः २ उक्थ्यः ३ षोडशी ४ वाजपेयः ५ स द्बिविधः संस्था कुरुश्च । अतिरात्रः ६ अप्तूर्य्यामः ७ ।</blockquote>
{| class="wikitable"
|+Srauta Yajnas According to Shabdakalpadruma
!Haviryajnas
!Somayajnas
|-
|अग्निहोत्रम् ॥ [[Agnihotra (अग्निहोत्रम्)|Agnihotra]] or (आग्न्याधानं ॥ Agnyadhana)
|अग्निष्टोमः ॥ Agnistoma
|-
|दर्शपौर्णमासौ ॥ Darsapurnamasa
|अत्यग्निष्टोमः ॥ Atyagnistoma
|-
|आग्रयणम् ॥ Agrayana
|उक्थ्यः ॥ Ukthya
|-
|पिण्डपितृयज्ञः ॥ Pindapitryajna
|षोडशी ॥ Sodashi
|-
|चातुर्मास्यः ॥ Chaturmasya
|वाजपेयः ॥ Vajapeya
|-
|निरूढपशुबन्धः ॥ Nirudha Pashubandha
|अतिरात्रः ॥ Atiratra
|-
|सौत्रामणिः ॥ Sautramani
|आप्तोर्यामः ॥ Aptoryam
|}Different Brahmanas and Sutras, however, mention different Haviryajnas though the Somayajnas remain the fairly same.  

'''Gopatha Brahmana''' (1.5.23)<ref>Gopatha Brahmana ([https://sa.wikisource.org/wiki/%E0%A4%97%E0%A5%8B%E0%A4%AA%E0%A4%A5_%E0%A4%AC%E0%A5%8D%E0%A4%B0%E0%A4%BE%E0%A4%B9%E0%A5%8D%E0%A4%AE%E0%A4%A3%E0%A4%AE%E0%A5%8D/%E0%A4%AD%E0%A4%BE%E0%A4%97%E0%A4%83_%E0%A5%A7_(%E0%A4%AA%E0%A5%82%E0%A4%B0%E0%A5%8D%E0%A4%B5%E0%A4%AD%E0%A4%BE%E0%A4%97%E0%A4%83)/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%AA%E0%A4%BE%E0%A4%A0%E0%A4%95%E0%A4%83_%E0%A5%AB Purvabhara Prapathaka 5])</ref> describes the Haviryajnas and Somayajnas as follows <blockquote>अग्न्याधेयम् अग्निहोत्रं पौर्णमास्यमावास्ये । नवेष्टिश् चातुर्मास्यानि पशुबन्धोऽत्र सप्तमः ॥ इत्य् एते हविर्यज्ञाः </blockquote><blockquote>अग्निष्टोमोऽत्यग्निष्टोम उक्थ्यः षोडशिमांस् ततः । वाजपेयोऽतिरात्रश्चाप्तोर्यामात्र सप्तमः ॥ इत्य् एते सुत्याः</blockquote>Agnyadheyam and Navesti are given Gopatha Brahmana as part of the Haviryajnas, where Agrayana and Pindapitryajna are not mentioned.  

'''Aitreya Aranyakam''' (2.3.3) (belonging to Rig veda) describes five categories of shrauta yagnas as follows <blockquote>स एष यज्ञः पञ्चविधोऽग्निहोत्रं दर्शपूर्णमासौ चातुर्मास्यानि पशुः सोमः (Aitr. Aran. 2.3.3)<ref>Aitreya Aranyakam ([https://sa.wikisource.org/wiki/%E0%A4%90%E0%A4%A4%E0%A4%B0%E0%A5%87%E0%A4%AF_%E0%A4%86%E0%A4%B0%E0%A4%A3%E0%A5%8D%E0%A4%AF%E0%A4%95%E0%A4%AE%E0%A5%8D/%E0%A4%86%E0%A4%B0%E0%A4%A3%E0%A5%8D%E0%A4%AF%E0%A4%95_%E0%A5%A8 Aranyakam 2])</ref></blockquote>
# Agnihotra 
# Darsapurnamaasa 
# Chaaturmasya 
# Pasu 
# Soma  
'''Gautama Dharmasutras''' also enumerate the seven haviyajnas and seven somasamsthas. Agnyadhana is also a haviryajna according to Gautama Dharmasutras (1.8.20)<ref name=":0" /> <blockquote>अग्न्याधेयमग्निहोत्रं दर्शपूर्णमासावाग्रयणं चातुर्मास्यानि निरूढपशुबन्धः सौत्रामणीति सप्तहविर्यज्ञसम्स्थाः ॥</blockquote>Here we see instead of Pindapitryajna, Agnyadheya (also called Agnyadhana) is described as one of the seven Haviryajnas.

The most common of these yajnas is the Agnihotra, where daily havis of milk is given in the three fires, every morning and evening. Apart from Agnihotra, Darsapurnamasa (performed on New and Full Moon days) and Chaturmasya (performed at the beginning of three seasons) are also important and conducted by few people even in the present days.  
== General Rules in Shrauta Yajnas ==
Some of the general rules applicable in all shrauta karmas, from the Asvalayana Srautasutras (1.1.8 to 22) summarized in pages 982 - 983 of reference<ref name=":0" /> are given below.<blockquote>तस्य नित्याः प्राञ्चश्चेष्टाः ८ अङ्कधारणा च ९ यज्ञोपवीतशौचे च १० विहारादव्यावृत्तिश्च तत्र चेत् कर्म ११ एकाङ्गवचने दक्षिणं प्रतीयात् १२ अनादेशे १३ कर्मचोदनायां होतारं १४ ददातीति यजमानं १५ जुहोति-जपतीति प्रायश्चित्ते ब्रह्माणं १६ ऋचं पादग्रहणे १७ सूक्तं सूक्तादौ हीने पादे १८ अधिके तृचं सर्व्वत्र १९ जपानुमन्त्रणाप्यायनोपस्थानान्युपांशु २० मन्त्राश्च कर्म्मकरणाः २१ प्रसङ्गादपवादो बलीयान् २२ (Asva. Shra. 1.1.8 to 22)<ref>Asvalayana Shrautasutras ([https://sa.wikisource.org/wiki/%E0%A4%86%E0%A4%B6%E0%A5%8D%E0%A4%B5%E0%A4%B2%E0%A4%BE%E0%A4%AF%E0%A4%A8_%E0%A4%B6%E0%A5%8D%E0%A4%B0%E0%A5%8C%E0%A4%A4%E0%A4%B8%E0%A5%82%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A5%8D/%E0%A4%85%E0%A4%A7%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%AF%E0%A4%83_%E0%A5%A7 Adhyaya 1])</ref></blockquote>
# Unless expressly stated, the yajamana should always face the north direction and sit cross-legged.
# The yajnik materials (kusa etc) should have their ends pointed towards the east direction.
# The sacred thread (yajnopavitam) should be worn in all activities, in the upavita form, except where the nivita or prachinaviti form is expressly ordained.
# Whenever a limb (anga) is mentioned, or no particular limb is mentioned, the right limb (hand, foot, finger) is meant.
# Whenever the word "dadati" is used the yajamana is the agent of the action.
# When any rite is prescribed without expressly stating the performer, it is the Hotr who does it, and in the case of prayaschittas wherever the words juhoti and japati occur the Brahman priest is the agent to perform those acts.
# When the first pada of a Rk mantra is mentioned for being employed in any rite the whole mantra is intented to be recited. 
# When the first words of a Sukta (not amounting to a pada of mantra) are mentioned for being employed in any rite then the Sukta is to be recited; if the first words of a Sukta amounting to more than a pada of mantra are mentioned, it is intended that three verses are to be recited (that verse and the following two). 
# Japa, amantrana, abhimantrana, apyayana, upasthana, and mantras that indicate the rite that is being performed are to be recited in a low voice (Upamsu).
# A special rule (apavada) is stronger than a general rule (प्रसङ्गः prasanga).

== Brief Description of Haviryajnas ==
Agnihotra, is a term specifically applicable to the first and important vaidika yajnas classified among the seven Srauta karmas - [[हविर्यज्ञानि ॥ Haviryagnas|हविर्यज्ञानि ॥ Haviryajnas]] (offering of havis is made) or homas. It is performed as a daily worship to Agni and also with an intent to fulfill any specific desire<ref name=":03222222222">http://www.hindupedia.com/en/Agnihotra#cite_note-1</ref><ref name=":022222222">Venkateswara Rao. Potturi (2010) ''Paaramaathika Padakosam'' Hyderabad: Msko Books</ref>.

== References ==
[[Category:Yajnas]]