Kalpa

(2) (“proper,” “fit”) One of the six
Vedangas, auxiliary branches of knowledge connected with the Vedas, the oldest Hindu religious texts. The Kalpa
section prescribes the rites connected
with the Vedic rituals and gives rules for
performing ceremonial and sacrificial
acts. The other Vedangas are vyakarana
(Sanskrit grammar), chandas (Sanskrit
prosody), nirukta (etymology), shiksha
(correct pronunciation), and jyotisha
(auspicious times for sacrifices).