Note 3 — Chapter XVII · SAṄKÂŚYA. BUDDHA’S ASCENT TO AND DESCENT FROM THE TRAYASTRIṂŚAS HEAVEN, AND OTHER LEGENDS.
James Legge translation
Buddha’s mother, Mâyâ and Mahâ-mâyâ, the mater immaculata of the Buddhists, died seven days after his birth. Eitel says, ‘Reborn in Tushita, she was visited there by her son and converted.’ The Tushita heaven was a more likely place to find her than the Trayastriṃśas; but was the former a part of the latter? Hardy gives a long account of Buddha’s visit to the Trayastriṃśas (M. B., pp. 298–302), which he calls Tawutisâ, and speaks of his mother (Mâtru) in it, who had now become a deva by the changing of her sex.