Is it permissible to offer greetings (salām) to someone who is speaking with another person?
It is disliked to greet someone who is engaged in conversation with another person, or reciting the Quran, or eating, or relieving themselves, or praying, or fighting; because they are unable to return the greeting. However, if they appear ready to respond, then there is no harm in greeting them.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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