<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.<br> Note:<br> When is it permissible for a Muslim to desert another for more than three days?<br> It is permissible to extend the period of desertion when this would realize a Shariah interest, like when the deserted person is persisting on committing sins in public. Desertion in this case is meant to deter the sinner and warn the people of his evil, so there is nothing wrong if he is deserted beyond three days, as this is considered a treatment for him and deterrence for those who act like him. This, however, should be done to honor the right of Allah Almighty, not for one’s own interest.