What is the detailed explanation of the view held by those who maintain that whoever deliberately misses a single prayer until its time has expired commits an act of disbelief (kufr) and exits the fold of Islam? What are their proofs, what type of disbelief is intended, and what should one who did so out of laziness, without knowing the ruling, do?

Some scholars, such as Ibn Jubayr, Al-Sha'bi, Al-Nakha'i, Al-Awza'i, and Ibn Al-Mubarak, held the view that abandoning prayer is an act of disbelief (kufr) that expels one from the fold of Islam. They supported their view with verses like: "But if they repent, establish prayer, and give zakat, then they are your brothers in religion" (Quran 9:11), and hadiths such as: "Between a man and disbelief is the abandonment of prayer," and "The covenant between us and them is prayer; whoever abandons it has disbelieved." There is a strong difference of opinion among scholars on this issue. Although some lean towards the view that abandoning prayer due to laziness does not expel one from the fold of Islam, it is incumbent upon the one who abandons it to hasten to repentance and maintain it by making up for what was missed, for the matter is grave.