Sunan Abu Dawud
4920
Sahih+3

Humaid b. 'Abd al-Rahman quoted his mother as saying:The Prophet (ﷺ) said: He who forged in order to put things right between two persons did not lie. The version by Ahmad ibn Muhammad and Musaddad has: The liar is not the one who puts things right between people, saying what is good and increasing good

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid