صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
باب ما يكره للمصلي وما لا يكره - ذكر الإباحة للمصلي أن يبصق في نعليه أو يتنخع فيهما
Chapter on What is Disliked and Not Disliked – Permissibility to Spit or Clear the Throat into One’s Shoes in Prayer
1 hadith
Hadith 2272
Abu Al-Ala bin Shukhair narrates from his father: He offered prayer behind the Prophet Muhammad (peace be upon him). He spat and then rubbed it with his left shoe.