The son of Sudinna Kalandakaputta by the wife of his lay days. He was conceived after Sudinna had already been ordained. His wife came to him during her period and begged him to give her an offspring. As the rule against unchastity had not then been promulgated, Sudinna yielded to her importunities, thus prompting the Buddha to lay down the first Pārājika. The son was called Bījaka, and so Sudinna came to be called Bījakapitā and the mother Bījakamātā. Both Bījaka and his mother later left the world and became arahants. Vin.iii.17–19