The Prophet (ﷺ) purchased food grains from a Jew on credit and mortgaged his iron armor to him.
Sahih al-Bukhari Book 34, Hadith 21
← Previous Hadith I heard Allah's Messenger (ﷺ) saying, "whoever desires an expansion in his sustenance and age, should keep good relations with his Kith and kin."

Sahih al-Bukhari Book 34, Hadith 20 Next Hadith → Anas went to the Prophet (ﷺ) with barley bread having some dissolved fat on it. The Prophet (ﷺ) had mortgaged his armor to a Jew in Medina and took from him some barley for his family. Anas heard him saying, "The household of Muhammad did not possess even a single Sa of wheat or food grains for the evening meal, although he has nine wives to look after." (See Hadith No. 685)

Sahih al-Bukhari Book 34, Hadith 22