Mahabharata 12.136.198

कालेन रिपुणा संधिः काले मित्रेण विग्रहःकार्य इत्येव तत्त्वज्ञाः प्राहुर्नित्यं युधिष्ठिर

kālena ripuṇā saṃdhiḥ kāle mitreṇa vigrahaḥkārya ityeva tattvajñāḥ prāhurnityaṃ yudhiṣṭhira

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