Al-Salaf or Salam transaction (i.e., a sale of payment in advance) refers to a sale transaction whereby a buyer purchases a clearly defined item to be delivered later,on a fixed future date, and pays its price in advance, in the contracting session. In this hadeeth, the Taabi’ee (a Muslim who saw at least one of the Companions)Muhammad ibn Al-Mijaalid narrated that ‘Abdullah ibn Shaddad ibn Al-Haad and Aboo Burdah ibn Abee Moosaa Al-Ash‘ari differed about whether or not the Companions (may Allah be pleased with them) used to pay in advance for wheat to be delivered at a future time during the lifetime of the Prophet ﷺ, as narrated in the version complied in Saheeh Al-Bukhaaree. They sent him to ‘Abdullah ibn Abee Awfaa (may Allah be pleased with them) to ask him about it, and he (may Allah be pleased with him) replied: “We used to pay in advance to the peasants of Shaam for wheat, barley and olive oil of a known specified measure to be delivered at a specified future time.” The version of the hadeeth recorded in Saheeh Al-Bukhaaree reads, “… some Nabateans from those of Syria used to come to us.” The Nabateans were Arabs who mixed with non-Arabs and Romans, and this corrupted their language and lineage. Those of them who mixed with the non-Arabs settled in Al-Bataa’ih between Basrah and Kufa, and those who mixed with the Romans settled in the valleys of Shaam (Greater Syria or Levant) and were called: Al-Nabat, Al-Nabeet, and the Nabataeans. They were given these names because they were known for groundwater extraction as they worked in agriculture. They used to buy from them wheat, barley, oil - and in another version of the hadeeth: ‘and raisins’ - of known specified measures to be delivered at a specified future time. This means that they would buy these crops for an immediate payment, and specify their measure and future delivery date. Ibn Abee Al-Milaaid asked him: “Was the price paid (in advance) to those who had the sold items to be delivered later?” He asked him whether or not the Salam transaction is valid if the seller does not grow wheat or grapes to begin with, and ‘Abdullah ibn Awfaa replied, “We did not use to ask them about that.” Then ‘Abdullah ibn Shaddad and Aboo Burdah (may Allah be pleased with them) sent Ibn Abee Al-Milaaid to ‘Abdul-Rahmaan ibn Abzaa (may Allah be pleased with him) and he asked him about it, and he replied, "The Companions (may Allah be pleased with them) of the Prophet ﷺ used to conduct Salam transactions during the lifetime of the Prophet ﷺ; and we did not use to ask them whether they had standing crops or not." This means that they did not ask them whether or not they grew such crops. This fosters ease and facilitation (preached by the Laws of Islam), and to opt for leniency regarding the matters that were pardoned as per the laws of Islam. The hadeeth also highlights that Muslims are urged to consult the people of knowledge about disagreements and disputes (regarding religious matters). .