Mukhtasar Bukhari (Abridged) 1050 — Salam with someone who does not

Narrated Ibn Abi Awfa (may Allah be pleased with him): "We used to practice Salam (advance payment sale) in wheat, barley, grapes, and dates during the time of the Messenger of Allah (peace and blessings of Allah be upon him), Abu Bakr As-Siddiq (may Allah be pleased with him), and Umar Farooq (may Allah be pleased with him)."