whereupon Ibn Abbās—who had by then lost his sight—asked, ‘Who is this?’ They replied, ‘This is the Yemeni man who regularly visits you.’ They identified the man for him, and Ibn Abbās stated that the greeting of peace ends with the words ‘and His blessings.’”1.
Another rule governing the greeting of peace is that it should not be restricted to acquaintances. Rather, a Muslim should greet those he knows and those he does not know. We have already discussed the hadith of Abd Allah ibn Amr (may Allah be pleased with him and his father) concerning this. The Sunnah also states that restricting greetings to acquaintances is one of the signs of the Hour. In al-Musnad, through a sound chain of transmission, al-Aswad ibn Yazīd reported that the Messenger of Allah (peace and blessings be upon him) said: “One of the signs of the Hour is that greetings will be given only to those one knows.”2. According to another narration: “A man will greet another man only because he knows him.”
Another rule governing the greeting of peace is that Jews and Christians should not be greeted first, because the Prophet (peace and blessings be upon him) said: “Do not initiate the greeting of peace with Jews or Christians.”3. If they greet Muslims first, it is sufficient to reply, “And upon you.” This is based on the report in the two Sahih collections from Abd Allah ibn Umar (may Allah be pleased with him and his father), in which the Messenger of Allah (peace and blessings be upon him) said: “When the People of the Book greet you, one of them is actually saying, ‘Death be upon you,’ so say, ‘And upon you.’”4.
As for adherents of religious innovations and deviant desires, the ruling on greeting them requires further distinction, which may be understood by examining the evidence and knowing the guidance of the early generations of the Muslim community ﵏. If an innovator is a disbeliever because of his innovation, and qualified scholars have ruled that he has left the fold of Islam, he is not to be greeted, for the ruling on greeting him is exactly the same as the ruling on greeting other disbelievers.