Abdullah bin Amr bin al-As (may Allah be pleased with them both) said that the Prophet (peace and blessings be upon him) said: "Pardon one another the hudud (prescribed punishments) among yourselves; if the matter reaches me, the hadd becomes obligatory."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17611