(6) باب الرَّهْنِ فِي السَّلَمِ
Narrated Al-A`mash:
We argued at Ibrahim's dwelling place about mortgaging in Salam. He said, "Aisha said, 'The Prophet (ﷺ) bought some foodstuff from a Jew on credit and the payment was to be made by a definite period, and he mortgaged his iron armor to him."
Reference: Sahih al-Bukhari 2252
In-book reference: Book 35, Hadith 13
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 35, Hadith 454