Sita Sings the Blues

It's a wacky movie about the story of Sita and Rama, told in funky animation and with 1920s jazz music. Sita is faithful to Rama when she's abducted by a god, but he doubts her and makes her go through a trial by fire. She gives birth to his sons, and he doubts her again, sending her away. Eventually she shows him up by being swallowed into the earth as proof of her fidelity to him.