Dealing with Ribaa (i.e., interest, usury) is one of the gravest major sins, and the Laws of Islam has deemed unlawful every sale that is not free of all suspicions of Ribaa, and has deemed permitted all lawful sales that do not involve Ribaa. People in the Pre-Islamic era engaged in sales transactions that heavily involved Ribaa, but Islam rectified these sales and eliminated the traces of Ribaa. In this hadeeth, Aboo Sa’eed(may Allah be pleased with him) related that Bilaal (may Allah be pleased with him) once brought Barni, one of the finest kinds of date. The Prophet ﷺasked him about the source of these dates and he (may Allah be pleased with him) replied, “I had some inferior dates and exchanged two Saa‘s of them for one Saa‘ of Barni dates in order to give it to the Prophet ﷺ to eat them.” Thereupon, the Prophet ﷺsaid, "Beware! Beware!” The Arabic word used in the hadeeth is Uwwah, a word used to indicate pain and sadness. The Prophet ﷺ used this word to indicate his pain upon hearing of such an act and that Bilaal (may Allah be pleased with him) did not know that his act was sheer Ribaa. In fact, this kind of Ribaa is known as Ribaa Al-Fadhl (i.e., excess charged in the event of a barter of specific homogenous commodities of different quality or quantity). The Prophet ﷺ advised him about the way to avoid Ribaa in this transaction. He ﷺ said: “Do not do so, but if you want to buy (a superior kind of dates) sell the inferior dates for money and then buy the superior kind of dates with that money.” This means that one should sell the poor-quality dates for money, and then buy with it the fine dates that he wants, to avoid charging excess in the event of a barter of homogenous commodities, and thus avoid Ribaa. It is deduced from the hadeeth that Ribaa Al-Fadhl is prohibited. The hadeeth also highlights that the ruler or leader should assign care to people’s religious affairs, edify those who lack religious knowledge on their religion, and guide them to the way to avail themselves of that which is lawful. Moreover, a follower should also assign care to his leader. It is inferred therefrom that any transaction that involves Ribaa is invalid. .