Mishkat al-Masabih 11 Business Transactions كتاب البيوع 122

وَعَنْ عَائِشَةَ قَالَتِ: اشْتَرَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ طَعَامًا من يَهُودِيٍّ إِلَى أَجَلٍ وَرَهَنَهُ دِرْعًا لَهُ مِنْ حَدِيد

‘A’isha said that God’s Messenger bought some grain from a Jew to be paid at a specified time, and gave him a coat of mail of his as a pledge. (Bukhari and Muslim.)