question #1 Sahih al-Bukhari 2386, Book 43, Hadith 2 : What does this narration indicate about the permissibility of engaging in credit transactions in Islam?

When we were with Ibrahim, we talked about mortgaging in deals of Salam. Ibrahim narrated from
Aswad that `Aisha had said, “The Prophet (ﷺ) bought some foodstuff on credit from a Jew and mortgaged
an iron armor to him.”