It is narrated from Amr bin Shu'ayb, from his father, from his grandfather Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both), that the Messenger of Allah (peace and blessings be upon him) said: "Pardon one another in matters of the prescribed punishments among yourselves, for whatever prescribed punishment is reported to me becomes obligatory (to carry out)." This hadith is sahih al-isnad (its chain is authentic), but the two Shaykhs (Bukhari and Muslim) did not record it.