Mahabharata 12.137.51

कस्माद्देवासुराः पूर्वमन्योन्यमभिजघ्निरेयदि कालेन निर्याणं सुखदुःखे भवाभवौ

kasmāddevāsurāḥ pūrvamanyonyamabhijaghnireyadi kālena niryāṇaṃ sukhaduḥkhe bhavābhavau

Our plain-language meaning of this verse is waiting for scholar review.