It was narrated from 'Aisha that :
the Messenger of Allah (ﷺ) bought some food from a Jew with payment to be made later, and he pawned his armor for that. (JA)
English reference (JA): Vol. 3, Book 16, Hadith 2436 (JA)
Arabic reference (JA): Book 16, Hadith 2530 (JA)