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However, according to Pt. Satyavrat Samashrami<ref name=":02232222" />, Rig veda has only 2 ancient shakhas namely, शाकलः || Shakala and माण्डूकेयः || Mandukeya. These two shakhas became 21 shakhas gradually. शङ्कराचार्यः ॥ Shakalacharya taught this veda to 5 of his disciples and gradually in their pronunciation there were differences bringing about 5 different versions of the Veda, which according to the text विकृति-कौमुदी ॥ Vikruti Kaumudi is as follows:  <blockquote>शाकल्यसेय शतं शिष्या नैष्ठिकब्रह्मचारिणः | पञ्च तेषां गृहस्थास्ते धर्मनिष्ठाश्च कुटुम्बिनः ||</blockquote><blockquote>शिशिरो वाष्कलो सांख्यो वात्स्यश्चैवाश्वलायनः | पञ्चैते शाकलाः शिष्याः शाखाभेदप्रवर्त्तकाः ||</blockquote><blockquote>śākalyaseya śataṃ śiṣyā naiṣṭhikabrahmacāriṇaḥ | pañca teṣāṃ gṛhasthāste dharmaniṣṭhāśca kuṭumbinaḥ ||</blockquote><blockquote>śiśiro vāṣkalo sāṃkhyo vātsyaścaivāśvalāyanaḥ | pañcaite śākalāḥ śiṣyāḥ śākhābhedapravarttakāḥ ||</blockquote>Meaning : शाकलः ॥ Shakala had 100 students who were ब्रह्मचारी-s || brahmacharis. Of them, 5 who were having धर्मनिष्ठा ॥ dharmanishtha were गृहस्थ-s || grhasthas bearing the responsibility of maintaining a family. शिशिरः || Shishira, वाष्कलः || Vashkala (Bashkala), साङ्ख्यः || Sankhya, वात्स्यः || Vatsya and आश्वलायनः || Ashvalayana were the five disciples who were the प्रवर्तक-s || pravartakas of the different shakhas.<ref name=":02232222" /> Ashvalayana Samhita was available as lately as 17th century but is presently unavailable. शाङ्खायन-संहिता ॥ Sankhayana samhita is not available but its ब्राह्मण-s || Brahmanas and आरण्यक-s || Aranyakas are available. Some scholars opine that शाङ्खायन ॥ Sankhayana and कौषीतकी शाखाः॥ Kaushitaki shakhas are one and the same.<ref name=":2232222" />

However, according to Pt. Satyavrat Samashrami<ref name=":02232222" />, Rig veda has only 2 ancient shakhas namely, शाकलः || Shakala and माण्डूकेयः || Mandukeya. These two shakhas became 21 shakhas gradually. शङ्कराचार्यः ॥ Shakalacharya taught this veda to 5 of his disciples and gradually in their pronunciation there were differences bringing about 5 different versions of the Veda, which according to the text विकृति-कौमुदी ॥ Vikruti Kaumudi is as follows:  <blockquote>शाकल्यसेय शतं शिष्या नैष्ठिकब्रह्मचारिणः | पञ्च तेषां गृहस्थास्ते धर्मनिष्ठाश्च कुटुम्बिनः ||</blockquote><blockquote>शिशिरो वाष्कलो सांख्यो वात्स्यश्चैवाश्वलायनः | पञ्चैते शाकलाः शिष्याः शाखाभेदप्रवर्त्तकाः ||</blockquote><blockquote>śākalyaseya śataṃ śiṣyā naiṣṭhikabrahmacāriṇaḥ | pañca teṣāṃ gṛhasthāste dharmaniṣṭhāśca kuṭumbinaḥ ||</blockquote><blockquote>śiśiro vāṣkalo sāṃkhyo vātsyaścaivāśvalāyanaḥ | pañcaite śākalāḥ śiṣyāḥ śākhābhedapravarttakāḥ ||</blockquote>Meaning : शाकलः ॥ Shakala had 100 students who were ब्रह्मचारी-s || brahmacharis. Of them, 5 who were having धर्मनिष्ठा ॥ dharmanishtha were गृहस्थ-s || grhasthas bearing the responsibility of maintaining a family. शिशिरः || Shishira, वाष्कलः || Vashkala (Bashkala), साङ्ख्यः || Sankhya, वात्स्यः || Vatsya and आश्वलायनः || Ashvalayana were the five disciples who were the प्रवर्तक-s || pravartakas of the different shakhas.<ref name=":02232222" /> Ashvalayana Samhita was available as lately as 17th century but is presently unavailable. शाङ्खायन-संहिता ॥ Sankhayana samhita is not available but its ब्राह्मण-s || Brahmanas and आरण्यक-s || Aranyakas are available. Some scholars opine that शाङ्खायन ॥ Sankhayana and कौषीतकी शाखाः॥ Kaushitaki shakhas are one and the same.<ref name=":2232222" />

=== देवताः छन्दसः ऋत्विक् च ॥ Devatas, Chandas and Rtvik ===

=== देवताः छन्दसः ऋत्विक् च ॥ Devatas, Chandas and Rtvik ===

Rigveda mantras are chanted by the [[Hota (होता)|होता || Hota]] (the Rigveda priest), to invoke the deities to the यज्ञः ॥ [[Yagya (यज्ञ)|yajna]]. Important Rigvedic deities are अग्निः ॥ [[Agni (आग्निः)|Agni]], इन्द्रः ॥ [[Indra]], वरुणः ॥ [[Varuna]], उषस् ॥ [[Usha (उषा)|Ushas]], सविता ॥ [[Savita (सविता)|Savita]], पूषा ॥ [[Pushan|Pusha]], मित्रः ॥ [[Mitra (Vedic)|Mitra]], विष्णुः ॥ [[Vishnu]], रुद्रः ॥ [[Rudra (रुद्रः)|Rudra]], मरुत् ॥ [[Maruts|Marut]] and पर्जन्यः ॥ [[Parjanya (पर्जन्यः)|Parjanya]]. गायत्री ॥ Gayatri, जगती ॥ Jagati, बृहती ॥ Bruhati, पङ्क्ती ॥ Pankti and त्रिष्टुभ् ॥ Trishtubh and अनुष्टुभ् ॥ Anustubh are widely used meters (Page No 6 of Reference 4<ref name=":2232222" />).   

Rigveda mantras are chanted by the [[Hota (होता)|होता || Hota]] (the Rigveda priest), to invoke the deities to the यज्ञः ॥ [[Yagya (यज्ञ)|yajna]]. Important Rigvedic deities are अग्निः ॥ [[Agni (आग्निः)|Agni]], इन्द्रः ॥ [[Indra (इन्द्रः)|Indra]], वरुणः ॥ [[Varuna]], उषस् ॥ [[Usha (उषा)|Ushas]], सविता ॥ [[Savita (सविता)|Savita]], पूषा ॥ [[Pushan|Pusha]], मित्रः ॥ [[Mitra (Vedic)|Mitra]], विष्णुः ॥ [[Vishnu]], रुद्रः ॥ [[Rudra (रुद्रः)|Rudra]], मरुत् ॥ [[Maruts|Marut]] and पर्जन्यः ॥ [[Parjanya (पर्जन्यः)|Parjanya]]. गायत्री ॥ Gayatri, जगती ॥ Jagati, बृहती ॥ Bruhati, पङ्क्ती ॥ Pankti and त्रिष्टुभ् ॥ Trishtubh and अनुष्टुभ् ॥ Anustubh are widely used meters (Page No 6 of Reference 4<ref name=":2232222" />).   

=== विषयविभागाः ॥ Vishaya vibhaga-s ===

=== विषयविभागाः ॥ Vishaya vibhaga-s ===

The topics dealt with in the ऋग्वेद-संहिता ॥ Rigveda Samhita can be classified into 3 groups.

The topics dealt with in the ऋग्वेद-संहिता ॥ Rigveda Samhita can be classified into 3 groups.