Mahapadanasutta 1.21

1.21

' It is the rule, brethren, that, when the Bodhisat is descending into a mother's womb, no ailment what- soever befalls that mother; at ease is she and un- afflicted in body; and within her womb she sees the Bodhisat complete in the endowment of all his organs and his limbs. Just as if, brethren, there were a beau- tiful cat's-eye gem 1, of purest water, octangular, cut
with supreme skill, translucent and flawless, excellent in every way. And through it were strung a thread, blue or orange, red, white, or yellow. If a man who had eyes to see were to take it into his hand, he would clearly perceive how the one was strung on the other. Even so, brethren, when the Bodhisat is descending into a mother's womb, no ailment whatever befalls that
mother; at ease is she and unaffected in body; and within her womb she sees the Bodhisat complete in the endowment of all his organs and his limbs. That, in such a case, is the rule.