Kalpa Vedanga (कल्पवेदाङ्गम्)

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Kalpa (Samskrit : कल्पः) not to be confused with Kalpas defined by Kala pramana (time) is a part of the Shad Vedangas.

Etymology

• एष वै प्रथमः कल्पः प्रदाने हव्यकव्ययोः । eṣa vai prathamaḥ kalpaḥ pradāne havyakavyayoḥ । Manusmriti (3.147) defines Kalpa as विधिः । Vidhi to follow in the offering of हव्यकव्याः | havyakavyas (yajna vidhis).

• कल्प्यते विधीयते | kalpyate vidhīyate | (Shabdakalpadruma) defines kalpa as vidhis (for yajnas)

• वैदिकविधानज्ञापकेशास्त्रभेदे स चाश्वलायनापस्तम्बबौधायनकात्यायनादि-सूत्रात्मकः। vaidikavidhānajñāpakeśāstrabhede sa cāśvalāyanāpastambabaudhāyanakātyāyanādi-sūtrātmakaḥ | (Vachaspatyam) Kalpa is defined as the (set of) sutras defining the vaidika vidhanas (vedic rituals) as given by Ashvalayana, Apastamba, Baudhayana, Katyayana among others.

• The origin of Kalpa was for the organization of all the extensive rituals described in Vedas (वैदिककर्मकाण्डः | Vaidika Karmakanda).

• As given by Vishnumitra, कल्पो वेदविहितानां कर्मणामानुपूर्व्येण कल्पनाशास्त्रम् | kalpo vedavihitānāṃ karmaṇāmānupūrvyeṇa kalpanāśāstram | ie. Kalpa shastra is a guideline for all the actions laid down in Veda (such as yajnas and yagas)   

Guru describing preparation of Vedi for Yajna

Guru teaching Dharmashastras to students