Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) said: "Forgive one another, and the grudges between you will come to an end."
Al-Bazzar recorded it through Muhammad bin Abd al-Rahman bin al-Baylamani, and he is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدب / 13064