ذِكْرُ الْبَيَانِ بِأَنَّ مَنْ بَدَأَ بِالسَّلَامِ مِنَ الْمُتَهَاجِرَيْنِ كَانَ خَيْرَهُمَا
it is not allowable for a Muslim to keep apart from his brother for more than three days. When they meet, this turns away from him, and that turns away from him. The better of the two is the one who initiates in salutation. (Using translation from Abū Dāʾūd 4911)
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «لَا يَحِلُّ لِامْرِئٍ مُسْلِمٍ أَنْ يَهْجُرَ أَخَاهُ فَوْقَ ثَلَاثِ لَيَالٍ يَلْتَقِيَانِ فَيُعْرِضُ هَذَا وَيُعْرِضُ هَذَا وَخَيْرُهُمَا الَّذِي يَبْدَأُ بِالسَّلَامِ»