It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Do not cut off relations, bear enmity, hate or envy one another, and be brothers among the servants of Allah, as Allah has commanded you." [Sahih. Agreed upon]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21060