The Prophet (ﷺ) said: "Whoever drinks Khamr and puts it in his belly, Allah will not accept his Salah for seven (days), if he dies during them" - Muhammad bin Adam (One of the narrators) said: "he will die a Kafir. If he was too intoxicated to offer any of the obligatory" - Ibn Adam said: "or recite Qur'an, his Salah will not be accepted for 40 days, and if he dies during them," And Ibn Adam said: "He will die a Kafir."
Reference: Sunan an-Nasa'i 5669 In-book : Book 51, Hadith 131 English translation : Vol. 6, Book 51, Hadith 5672
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