Sahih al-Bukhari, Hadith 2386

Narrated Al-A`mash: When we were with Ibrahim, we talked about mortgaging in deals of Salam. Ibrahim narrated from Aswad that `Aisha had said, "The Prophet bought some foodstuff on credit from a Jew and mortgaged an iron armor to him."

حَدَّثَنَا مُعَلَّى بْنُ أَسَدٍ، حَدَّثَنَا عَبْدُ الْوَاحِدِ، حَدَّثَنَا الأَعْمَشُ، قَالَ تَذَاكَرْنَا عِنْدَ إِبْرَاهِيمَ الرَّهْنَ فِي السَّلَمِ فَقَالَ حَدَّثَنِي الأَسْوَدُ عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم اشْتَرَى طَعَامًا مِنْ يَهُودِيٍّ إِلَى أَجَلٍ، وَرَهَنَهُ دِرْعًا مِنْ حَدِيدٍ‏.‏

sunnah.com