Hanging a Mirror or a Calligraphic Inscription of the “Panjtan” (the Pure Five: the Prophet ﷺ, ‘Ali, Fatima, Hasan and Husayn) in the Mosque Is Makruh
Question
What is the ruling on hanging a mirror on the front wall of the mosque?
Answer
Anything on the front wall of the mosque (a mirror, a calligraphic inscription, patterns and decoration) by which the attention of the one praying is drawn in that direction is makruh. If adornment and embellishment are intended by it, then it is makruh.
Source: Fatawa Mahmudiyya
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