Messenger of Allah ﷺ bought some foodstuff (barley) from a Jew on credit and mortgaged his iron armor to him (the armor stands for a guarantor).
قَالَتِ اشْتَرَى رَسُولُ اللَّهِ ﷺ طَعَامًا مِنْ يَهُودِيٍّ بِنَسِيئَةٍ وَرَهَنَهُ دِرْعًا لَهُ مِنْ حَدِيدٍ