Is a fasting person permitted to moisten the lips with saliva, and does swallowing the saltiness of sweat from the lips invalidate the fast?
It is permissible for a fasting person to moisten the lips with saliva, and this does not invalidate their fast. Swallowing saliva when there is a taste of sweat does not invalidate the fast, because a mere taste does not affect the validity of the fast.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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