She was the daughter of a good and wealthy merchant of Ujjenī. Having come of age, she was given in marriage to the son of a merchant in Sāketa.
For one month she lived with him as a devoted wife; then because of her past kamma, her husband became estranged from her, and turned her out of the house. She was married again with the same result, and a third time to a friar. Isidāsī’s father persuaded him to give up the pilgrim’s life; he dwelt with his wife only for a fortnight and refused to stay with her any more. Isidāsī then met Jinadattā Therī, whom she entertained to a meal at her house. Under Jinadattā, Isidāsī joined the Order and became an Arahant.
The Therīgāthā (vv.400‑47), which contains forty-
Mrs. Rhys Davids thinks (Sisters, Introd. pp.xxii f) that Isidāsī’s verses in the Therīgāthā suggest late literary craft and bear the impress of late literary creation. The scene is Pāṭaliputta, and not any of the usual towns mentioned in the Canon, and the name of Isidāsī’s sponsor — Jinadattā — is, she says, significant. Perhaps there are traces here of Jainistic influence.
In the Dīpavaṃsa (xviii.9) Isidāsī (Isidāsikā) is mentioned in a list of eminent therīs who were leaders of the Order of bhikkhuṇis.