In this verse Allah Himself bears witness to the perfection of this religion and to its all-embracing capacity to secure people’s welfare and to resolve their disputes and problems until the Day of Resurrection. It is suited to every time and place; after it, humanity will never need another revealed law, another book sent down, or another messenger raised after the Messenger ﷺ. From now until the Last Hour, no case will arise and no unforeseen circumstance will occur without the Law of Muhammad ﷺ containing its solution and ruling. The real issue lies in finding those who are skilled at extracting and deducing these rulings. Whenever scholars who meet the conditions of ijtihād are present, this sharīʿah proves to be complete and capable of solving every problem. Any shortcoming comes from our side: from deficient knowledge and failure to grasp what Allah has revealed, or from personal whims that divert one from the truth. Otherwise, this religion is sound, comprehensive, and perfect; through it Allah has enriched the Muslim community until the Hour is established, provided they implement it properly and refer to it in all their affairs.
Allah the Exalted says: “If you differ about anything, refer it to Allah and the Messenger” (al-Nisāʾ 4:59). Referring it to Allah means referring it to the Book of Allah, and referring it to the Messenger after his death means referring it to his Sunnah. Allah the Exalted also says: