Hadith Scan

🍁it is not permissible to stay aloof from a Muslim for more than three days..

Ibn Hajar al-’Asqalani comments on this in his Fath al-Bari, Vol. 18 pg. 468:

قَالَ بن عَبْدِ الْبَرِّ أَجْمَعُوا ‌عَلَى ‌أَنَّهُ ‌لَا ‌يَجُوزُ ‌الْهِجْرَانُ فَوْقَ ثَلَاثٍ إِلَّا لِمَنْ خَافَ مِنْ مُكَالَمَتِهِ مَا يُفْسِدُ عَلَيْهِ دِينَهُ

Ibn Abd al-Barr narrates that there is an ijma amongst the scholars, that it is not permissible to stay aloof from a Muslim for more than three days, failure to do so means that one is ignoring the Deen.