Mahāpadānasutta

Suttapiṭaka · Dīghanikāya · Mahāvagga · Vol. 10 · Section 17

[17] Bhikkhus, this is the natural order (dhammatā): when the Bodhisatta (bodhisatta) has descended into his mother's womb, the Bodhisatta's mother becomes an obtainer of the five strands of sensual pleasure (kāmaguṇa). Supplied and endowed with the five strands of sensual pleasure, she amuses herself with them. This is the natural order in this case.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.