Is it permissible to raise one's voice when greeting the worshippers, or is it not?

The questioner : One person says, "Peace be upon you," and another says, "Peace be upon you," and the entire group hears it. What is the recommended practice in this regard?

The Shaykh : I see the first option, because the default rule for one entering the mosque is not to cause disturbance. So, if it is necessary to offer the greeting, and it is necessary to offer the greeting, then it should be to those around him.