Fussilat 41:7

ٱلَّذِينَ لَا يُؤْتُونَ ٱلزَّكَوٰةَ وَهُم بِٱلْءَاخِرَةِ هُمْ كَٰفِرُونَ ٧

Those who do not give zakah, and in the Hereafter they are disbelievers.