Is prayer valid when offered in work clothes (overalls) if they are contaminated with oils, greases, or diesel? And does the ruling differ based on the scarcity or abundance of these contaminants or their odor? And is prayer valid when offered in work boots on desert sand, with the possibility of grease or oil being on or under them? And does the ruling differ if the worshiper is a follower or an imam?
Everything that comes out of the earth, such as oils and petroleum materials, is pure. Prayer in clothes stained with it is permissible without any difficulty, whether the stain is small or large, and whether it has a smell or not. It is desirable for a Muslim to choose the best clothes for prayer and to clean oneself for it if able without hardship; otherwise, one should pray in one's current state.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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