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:30:59 –

Thus does Allah seal the hearts of those who do not know.  

Thus does God seal the hearts of those who do not know, ˹anything of˺ God’s Oneness, in the same way that He has sealed the hearts of these ˹aforementioned individuals˺.
القرآن:٣٠:٥٩ –

كَذَٰلِكَ يَطْبَعُ اللَّهُ عَلَىٰ قُلُوبِ الَّذِينَ لَا يَعْلَمُونَ  

{كذلك يطبع الله على قلوب الذين لا يعلمون} التوحيد كما طبع على قلوب هؤلاء.