Buddhacarita by Ven Asvaghosa - Ancient Buddhist Texts

Buddha-carita, or Life of Buddha - 12
19. Then falling from the host of beings in the Tuṣita heaven, and
illumining the three worlds, the most excellent of Bodhisattvas
suddenly entered at a thought into her womb, like the Nāga-king
entering the cave of Nandā.
20. Assuming the form of a huge elephant white like Himālaya, armed
with six tusks, with his face perfumed with flowing ichor, he entered
the womb of the queen of king Śuddhodana, to destroy the evils of
the world.
21. The guardians of the world hastened from heaven to mount watch
over the world’s one true ruler; thus the moonbeams, though they
shine everywhere, are especially bright on Mount Kailāsa.
22. Māyā also, holding him in her womb, like a line of clouds holding
a lightning-flash, relieved the people around her from the sufferings
of poverty by raining showers of gifts.
23. Then one day by the king’s permission the queen, having a great
longing in her mind, went with the inmates of the gynaeceum into the
garden Lumbinī.
24. As the queen supported herself by a bough which hung laden with
a weight of flowers, the Bodhisattva suddenly came forth, cleaving
open her womb.