Story: Reprinting The Enlightened Nuns from the Time of the Buddha by Panadure Vajira Silmatha. Told by Ajahn Amaro. [Dhamma books] [Bhikkhunī] [Buddha/Biography] // [Ajahn Candasirī] [Ajahn Amaro] [Artistic expression] [Non-return] [Bodhisattva]
Story: The wanderer Upaka falls in love with Cāpā, marries her, then returns to the Buddha, ordains as a monk, and becomes a non-returner. [Commentaries]
Vinaya: Mahāvagga 1.6: Upaka meets the Buddha.
Sutta: Thig 13.3: Cāpātherīgāthā (Upaka is apparently called Kāḷa here).
Reference: Upaka, The Dictionary of Pāli Proper Names by G P Malalasekera.
Sutta: SN 2.24 mentions Upaka as a non-returner.