Kalpa Sutra of Bhadrabahu Svami (Lala S.L. Jain)

This is the earliest account of the life of the Tirthankaras, the 24th, 23rd, 22nd, and 1st. With certain sects of the Jainas, the reading of the Kalpa Sutra during the Parjusana is a must which has contributed to the great spiritual significance of this work.