Sahih (Sahih al-Bukhari)
حَدَّثَنِي مُحَمَّدُ بْنُ مَحْبُوبٍ، حَدَّثَنَا عَبْدُ الْوَاحِدِ، حَدَّثَنَا الأَعْمَشُ، قَالَ تَذَاكَرْنَا عِنْدَ إِبْرَاهِيمَ الرَّهْنَ فِي السَّلَفِ فَقَالَ حَدَّثَنِي الأَسْوَدُ عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم اشْتَرَى مِنْ يَهُودِيٍّ طَعَامًا إِلَى أَجَلٍ مَعْلُومٍ، وَارْتَهَنَ مِنْهُ دِرْعًا مِنْ حَدِيدٍ.
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