Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:41:7 –

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

who do not pay the alms and who are disbelievers in the Hereafter (˹the repetition of˺ hum, ‘they’, is for emphasis).
القرآن:٤١:٧ –

الَّذِينَ لَا يُؤْتُونَ الزَّكَاةَ وَهُمْ بِالْآخِرَةِ هُمْ كَافِرُونَ  

{الذين لا يؤتون الزكاة وهم بالآخرة هم} تأكيد {كافرون}.

See similar narrations below:

Collected by Qurʾān
quran:31:4 –

Who establish prayer and give zakah, and they, of the Hereafter, are certain ˹in faith˺.  

who maintain the prayer (alladhīna yuqīmūna’l-salāta, an explication of al-muhsinīna, ‘the virtuous’) and pay the alms and who are certain of the Hereafter (the repetition of hum, ‘they’ ˹here translated ‘who’˺ is for emphasis).
القرآن:٣١:٤ –

الَّذِينَ يُقِيمُونَ الصَّلَاةَ وَيُؤْتُونَ الزَّكَاةَ وَهُمْ بِالْآخِرَةِ هُمْ يُوقِنُونَ  

{الذين يقيمون الصلاة} بيان للمحسنين {ويؤتون الزكاة وهم بالآخرة هم يوقنون} هم الثاني تأكيد.
quran:27:3 –

Who establish prayer and give zakah, and of the Hereafter they are certain ˹in faith˺.  

those who observe prayer, performing it in the way that it should be ˹performed˺, and give alms and who are certain of the Hereafter, knowing it ˹to be true˺ through the ˹many˺ proofs thereof (hum, ‘they’, is repeated because a separation has taken place between it ˹the first hum˺ and the predicate ˹yūqinūna˺).
القرآن:٢٧:٣ –

الَّذِينَ يُقِيمُونَ الصَّلَاةَ وَيُؤْتُونَ الزَّكَاةَ وَهُمْ بِالْآخِرَةِ هُمْ يُوقِنُونَ  

{الذي يقيمون الصلاة} يأتون بها على وجهها {ويؤتون} يعطون {الزكاة وهم بالآخرة هم يوقنون} يعلمونها بالاستدلال وأعيد {هم} لما فصل بينه وبين الخبر.