What is the ruling on saying: “al-salaamu ‘alaa man Ittaba`a al-hudaa”?

Question 2: Is it permissible for a Muslim to greet their colleagues saying: “al-salaamu ‘alaa man Ittaba`a al-hudaa (Peace be upon those who follow the guidance)”?

Answer: A Muslim should maintain the rights of other Muslim brothers and consider their feelings. A Muslim loves for fellow Muslims what they love for their own selves, just as reported in the Hadeeth of the Prophet (peace be upon him)… read more here.