Mahabharata 13.87.2

वैशंपायन उवाच · vaiśaṃpāyana uvāca

युधिष्ठिरेणैवमुक्तो भीष्मः शांतनवस्तदाइमं श्राद्धविधिं कृत्स्नं प्रवक्तुमुपचक्रमे

yudhiṣṭhireṇaivamukto bhīṣmaḥ śāṃtanavastadāimaṃ śrāddhavidhiṃ kṛtsnaṃ pravaktumupacakrame

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