Vamana Avatar — The Three Strides
वामनावताकथा
Ch. 21–55: The central narrative — birth of Vamana (Vishnu's dwarf avatar) to Aditi and Kashyapa; the yajna of King Bali (Mahabali); Vamana's request for three paces of land; Shukracharya's warning; the three cosmic strides claiming heaven, earth, and netherworld; Bali's liberation and boon of ruling Patala.