Mahāpadānasutta

Suttapiṭaka · Dīghanikāya · Mahāvagga · Vol. 10 · Section 19

[19] Bhikkhus, this is the natural order (dhammatā): when the Bodhisatta (bodhisatta) has been born seven days, the Bodhisatta's mother passes away and is reborn in the Tusita host of gods. This is the natural order here.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.