Jami' al-Saghir / Jam' al-Jawami' (al-Suyuti) 4-718b
"عن عليٍّ قال: إِذَا كَانَ أَحَدُكُم يُصَلِّى فَليحسرِ العِمَامَةَ عَنْ جَبْهَتِهِ".
Notes
[ق] البيهقى في السنن
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