The Compendium of Bheḷa 4.8.5

4.8.5

yā[yāvad] vi dvitīyamāsi puṣpaṃ paśyenna vāsyā[va] garbhastiṣṭhatīti vidyādajātasārā[nā] hi tadā garbhavatyo bhavanti | yasyāstu[tasyāstu] khaluyoniḥ[yoni] jātasāre puṣpam āsravati[āśraya] tasyāḥ patativāpyatikālaṃ[vāpity a-] vā ' vatiṣṭhate gabhaḥ pariśuṣkagātra iti ||

If a woman sees her menstrual flow in the second month, one should know that her embryo does not remain, for at that time pregnant women have not yet formed their essential tissue. / But in one whose yoni discharges menses after the essential tissue has formed, her embryo either falls or remains past its due time with withered limbs.