Do not hate each other; do not envy each other; do not desert each other; and be the servants of Allah as brethren. It is not allowed for a Muslim to keep apart from his brother for more than three days.  

أَنَّ النَّبِيَّ ﷺ قَالَ لاَ تَبَاغَضُوا وَلاَ تَحَاسَدُوا وَلاَ تَدَابَرُوا وَكُونُوا عِبَادَ اللَّهِ إِخْوَانًا وَلاَ يَحِلُّ لِمُسْلِمٍ أَنْ يَهْجُرَ أَخَاهُ فَوْقَ ثَلاَثِ لَيَالٍ  

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.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَحِلُّ لِمُسْلِمٍ أَنْ يَهْجُرَ أَخَاهُ فَوْقَ ثَلاَثَةِ أَيَّامٍ يَلْتَقِيَانِ فَيُعْرِضُ هَذَا وَيُعْرِضُ هَذَا وَخَيْرُهُمَا الَّذِي يَبْدَأُ بِالسَّلاَمِ  

The Prophet ﷺ said: It is not allowable for a believer to keep from a believer for more than three days. If three days pass, he should meet him and give him a salutation, and if he replies to it they will both have shared in the reward; but if he does not reply he will bear his sin (according to Ahmad's version) and the one who gives the salutation will have come forth from the sin of keeping apart.  

أَنَّ النَّبِيَّ ﷺ قَالَ لاَ يَحِلُّ لِمُؤْمِنٍ أَنْ يَهْجُرَ مُؤْمِنًا فَوْقَ ثَلاَثٍ فَإِنْ مَرَّتْ بِهِ ثَلاَثٌ فَلْيَلْقَهُ فَلْيُسَلِّمْ عَلَيْهِ فَإِنْ رَدَّ عَلَيْهِ السَّلاَمَ فَقَدِ اشْتَرَكَا فِي الأَجْرِ وَإِنْ لَمْ يَرُدَّ عَلَيْهِ فَقَدْ بَاءَ بِالإِثْمِ زَادَ أَحْمَدُ وَخَرَجَ الْمُسَلِّمُ مِنَ الْهِجْرَةِ  

The Messenger of Allah ﷺ said: It is not right for a Muslim to keep apart from another Muslim for more than three days. Then when he meets him and gives three salutations, receiving during that time no response, the other bears his sin.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَكُونُ لِمُسْلِمٍ أَنْ يَهْجُرَ مُسْلِمًا فَوْقَ ثَلاَثَةٍ فَإِذَا لَقِيَهُ سَلَّمَ عَلَيْهِ ثَلاَثَ مِرَارٍ كُلُّ ذَلِكَ لاَ يَرُدُّ عَلَيْهِ فَقَدْ بَاءَ بِإِثْمِهِ  

The Prophet ﷺ said: It is not allowable for a Muslim to keep apart from his brother for more than three days, for one who does so and dies will enter Hell.  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ يَحِلُّ لِمُسْلِمٍ أَنْ يَهْجُرَ أَخَاهُ فَوْقَ ثَلاَثٍ فَمَنْ هَجَرَ فَوْقَ ثَلاَثٍ فَمَاتَ دَخَلَ النَّارَ  

AbuKhirash heard the Messenger of Allah ﷺ say: If one keeps apart from his brother for a year, it is like shedding his blood.  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ هَجَرَ أَخَاهُ سَنَةً فَهُوَ كَسَفْكِ دَمِهِ  

The gates of Paradise are opened on Mondays and Thursdays, and forgiveness is granted to every man who does not associate anything with Allah, except for a man between whom and his brother there is rancor. Command will be given that they should be given respite till they conciliate. Abu Dawud said: The Prophet ﷺ kept apart from some of his wives for forty days, and Ibn 'Umar kept apart from his son till he died. Abu Dawud said: If keeping apart is meant for the sake of Allah, then it has no concern with it. 'Umar bin 'Abd al-'Aziz covered his face from a man.  

عَنِ النَّبِيِّ ﷺ قَالَ تُفْتَحُ أَبْوَابُ الْجَنَّةِ كُلَّ يَوْمِ اثْنَيْنِ وَخَمِيسٍ فَيُغْفَرُ فِي ذَلِكَ الْيَوْمَيْنِ لِكُلِّ عَبْدٍ لاَ يُشْرِكُ بِاللَّهِ شَيْئًا إِلاَّ مَنْ بَيْنَهُ وَبَيْنَ أَخِيهِ شَحْنَاءُ فَيُقَالُ أَنْظِرُوا هَذَيْنِ حَتَّى يَصْطَلِحَا