What should be done if someone calls out to a person during the prayer?

Question

If someone calls from outside to a person who is praying inside the house, may the one praying in some way let the caller know that he is in the prayer and therefore cannot come out?

Answer

If it can be done by means of “سبحان الله” (“Glory be to Allah”), “الله أكبر” (“Allah is the Greatest”) or by reciting a verse, it is permitted.

Source: Fatawa Mahmudiyya

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