Sahih al-Bukhari 2251
Sahih al-Bukhari · Book 35: Sales in which a Price is paid for Goods to be Delivered Later (As-Salam) · The guarantor in As-Salam
Narrated `Aisha:
حَدَّثَنَا مُحَمَّدٌ ، حَدَّثَنَا يَعْلَى ، حَدَّثَنَا الأَعْمَشُ ، عَنْ إِبْرَاهِيمَ ، عَنِ الأَسْوَدِ ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتِ اشْتَرَى رَسُولُ اللَّهِ صلى الله عليه وسلم طَعَامًا مِنْ يَهُودِيٍّ بِنَسِيئَةٍ، وَرَهَنَهُ دِرْعًا لَهُ مِنْ حَدِيدٍ.
Allah's Messenger (ﷺ) bought some foodstuff (barley) from a Jew on credit and mortgaged his iron armor to him (the armor stands for a guarantor).