It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Cutting off relations (not speaking to one another) for more than three days is not permissible. Then if the two meet, and one greets the other with salam and the other returns his salam, they both share in the reward; and if the other refuses to return the salam, the first is free of the sin and the other returns bearing that sin. And I fear that if the two die while they are cut off from one another, they will not be together in Paradise."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ibn Jurayj except Sa'id bin Salim, and Asad bin Musa is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 8930
Hadith Gradingمحدثین:إسناده ضعيف لضعف المقدام بن داود
Hadith Takhrij«قال الهيثمي: فيه مقدام بن داود وهو ضعيف وقال ابن دقيق العيد في الإمام إنه وثق «مجمع الزوائد ومنبع الفوائد، ج 8، ص 67»» «أخرجه الحاكم فى «المستدرك» برقم: 7384، والطبراني فى «الصغير» برقم: 280، والطبراني فى «الأوسط» برقم: 3030»