It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: It is not permissible to sever relations for more than three days. Whoever breaks off communication with his brother for more than three days and dies in that state will enter Hell.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9092
Hadith Gradingحکم دارالسلام:رجاله ثقات لكن منصورا شك في رفعه هنا، فالصحيح من الحديث مرفوعا: « لا هجرة فوق ثلاث » فقط، م: 2562