Hadithcore
Riyad as-Salihin, 1596

Abu Khirash Hadrad bin Abu Hadrad Al-Aslami (May Allah be pleased with him) said:

I heard the Prophet (ﷺ) saying, "Whosoever forsakes his brother for a year is like one who sheds his blood." <b>[Abu Dawud]</b>.

وعن أبي خراش حدرد بن أبي حدرد الأسلمي، ويقال السلمي الصحابي رضي الله عنه أنه سمع النبي صلى الله عليه وسلم يقول‏:‏ ‏

‏من هجر أخاه سنة فهو كسفك دمه‏

‏‏.‏‏(‏‏(‏رواه أبو داود بإسناد صحيح‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Book 17, Hadith 86
Sharh · explanationclick to expand
<b>Guidance from the Hadiths:</b><br> 1) It is impermissible for a Muslim to forsake his brother for more than three days.<br> 2) Spreading the greeting of peace among Muslims is one of the reasons for fostering love and entering Paradise. A Muslim should be keen on applying this prophetic guidance of spreading the greeting of peace among Muslims, and initiate it to those whom he knows and does not know.<br> 3) The occurrence of desertion and enmity among Muslims is an aspect of obeying the devil, and a reason for alienation between the believers.<br> 4) Insistence on desertion and abandonment without a valid Shariah reason is one of the major sins that makes the doer deserving of punishment.