Lakkhanasutta 2.19.2

2.19.2

pisuṇaṃ vācaṃ pahāya pisuṇāya vācāya paṭivirato ahosi. Ito sutvā na amutra akkhātā imesaṃ bhedāya, amutra vā sutvā na imesaṃ akkhātā amūsaṃ bhedāya, iti bhinnānaṃ vā sandhātā, sahitānaṃ vā anuppadātā, samaggārāmo samaggarato samagganandī samaggakaraṇiṃ vācaṃ bhāsitā ahosi.

He refrained from backbiting. He didn’t repeat in one place what he heard in another so as to divide people against each other. Instead, he reconciled those who were divided and support those who are united, delighting in harmony, loving harmony, speaking words that promote harmony.