The Compendium of Caraka 4.4.29

4.4.29

ye hyasya kukṣau vṛddhihetusamākhyātā bhāvāsteṣāṃ viparyayādudare vināśamāpadyate, athavā 'apyavcirajātaḥ syāt//

For by the contrary condition of those factors described as the causes of its growth in the womb, it undergoes destruction in the belly, or else it may be born stillborn.