pūrvapūrvakāraṇapratibaddhatvād uttareṣām / teṣāṃ ca sarveṣāṃ yugapat kāraṇavaikalyenāsannidhānāt /
Because the later [effects] would be restricted by [their] previous causes, and because all of these [causes] cannot be present simultaneously due to the deficiency of [their own] causes.