´It was narrated that Ibn 'Umar said:` "Whoever drinks Khamr and does not get intoxicated, his Salah will not be accepted so long as any trace of it remains in his belly or his veins, and if he dies he will die a Kafir. If he becomes intoxicated his Salah will not be accepted for 40 nights, and if he dies during them, he will die a Kafir." (Sahih Mawquf)
Hadith Referenceسنن نسائي / كتاب الأشربة / 5671
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح
´It was narrated from 'Abdullah bin 'Amr that:` The Prophet [SAW] 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."
Hadith Referenceسنن نسائي / كتاب الأشربة / 5672
Hadith Gradingالألبانی:ضعيف | زبیر علی زئی:ضعيف، إسناده ضعيف، يزيد بن ابي زياد ضعيف،. انوار الصحيفه، صفحه نمبر 366
Hadith Takhrij«تفرد بہ النسائي (تحفة الأشراف: 8921) (ضعیف) (اس کے راوی ’’یزید‘‘ ضعیف ہیں )»