الكافي- ط الاسلامية, volume 6, page 407

2. Certain persons of our people have, in mursal manner, narrated the following: “He (the Imam), ‘Alayhi al-Salam, has said, ‘The first thing about the unlawfulness of wine is in the words of Allah, most Majestic, most Glorious, “They ask you about wine and gambling. Say, ‘There is great sin in them and benefits for people but the sin in them is greater than their benefits.’” [2:219] When this verse was revealed people sensed the prohibition on it and prohibition on gambling. They learned that one must stay away from sins and that Allah, most Majestic, most Glorious, does not impose on them both ways because of His saying, “and benefits for people”. Thereafter Allah, most Majestic, most Glorious, sent another verse, “Wine, gambling, signs (indicators of sins), and gambling arrows are filthy matters of the acts of Satan, therefore, you must stay away from them, perhaps you attain salvation.” [5:90] This verse is more intense than the previous one in being more forceful about the unlawfulness. Then is the third stage and the third verse which is even more forceful than the first and the second verses as Allah, most Majestic, most Glorious, has said, “Satan only wants to place animosity and hatred among you in wine and gambling and prevent you from speaking of Allah and from Salat (prayer). Why then do you not stay away from them?” [5:91] Allah, most Majestic, most Glorious, has commanded to stay away from them and has explained the reason because of which they are unlawful. Allah, most Majestic, most Glorious, then in the fourth verse has stated, besides these verses, saying, “Say (O Muhammad) my Lord has made unlawful only the sins which are clearly known and that which is not clearly known, the sin and rebellion without right.” In the first verse Allah, most Majestic, most Glorious, has said, “They ask you about wine and gambling. Say, ’There are great sins in them and there is benefit for people.’” In the fourth verse He has said to say, “My Lord has made unlawful only the sins which are clearly known and that which is not clearly known.” Allah, most Majestic, most Glorious, has informed that there is sin in wine and other things and that it is unlawful because when Allah, most Majestic, most Glorious, decides to sanction an obligation He explains in gradual steps. This, on the part of Allah, most Majestic, most Glorious, is a plan which is more correct and closer to them for acceptance and of less dislike on their part.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.