Bhagavatapurana 6.18.62

6.18.62

cakarta saptadhā garbhaṃ vajreṇa kanakaprabham /
rudantaṃ saptadhaikaikaṃ mā rodīriti tān punaḥ //

61. & 62. Finding this weak point, Indra a master of Yoga entered by virtue of that power in her bowels when she was unconscious in sleep, and cut the infant brilliant like gold in the womb into seven pieces and as it cried he again cut each piece into seven pieces, saying "do not cry."