Mahabharata 12.204.11

नात्येति कारणं कार्यं न कार्यं कारणं तथाकार्याणां तूपकरणे कालो भवति हेतुमान्

nātyeti kāraṇaṃ kāryaṃ na kāryaṃ kāraṇaṃ tathākāryāṇāṃ tūpakaraṇe kālo bhavati hetumān

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