Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) said: "It is not permissible for a believer to cut himself off from his brother for more than three days."
Al-Tabarani recorded it in al-Mu'jam al-Awsat with two chains, one of which is da'if (weak), and the other chain contains Ibrahim bin Abi Usayd, whom I do not know. The rest of its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدب / 12973
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه احمد فى المسند (5357) ، أخرجه صحيح مسلم برقم: 2561، وأخرجه المعجم الأوسط للطبراني برقم: 9141»