Question: The questioner from Emirates says: sometimes we cannot differentiate between the disbelievers and Muslims in their form and appearance. So how is the greetings and Salams given to them?
Answer: “According to the ability of a person. And there is no sin if a person gives greetings to a disbeliever mistaking him for a Muslim. And being certain is a desirable affair which is is desired from a Muslim by the Legislation in all his actions. So it is necessary he is certain such that he does not give the greeting of Islam to a disbeliever who does not want it nor wants Islam”.
Faisal Ibn Abdul Qaadir Ibn Hassan