Mahabharata 1.166.11

ततो याज्यनिमित्तं तु विश्वामित्रवसिष्ठयोःवैरमासीत्तदा तं तु विश्वामित्रोऽन्वपद्यत

tato yājyanimittaṃ tu viśvāmitravasiṣṭhayoḥvairamāsīttadā taṃ tu viśvāmitro'nvapadyata

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