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:2:7 –

Allah has set a seal upon their hearts and upon their hearing, and over their vision is a veil. And for them is a great punishment.  

God has set a seal on their hearts, impressing on them and making certain that no good enters them; and on their hearing, ˹in which He has˺ deposited something so that they cannot profit from the truth they hear; and on their eyes is a covering, that is, a veil so that they do not see the truth; and for them there will be a mighty chastisement, that is, intense and everlasting.
القرآن:٢:٧ –

خَتَمَ اللَّهُ عَلَىٰ قُلُوبِهِمْ وَعَلَىٰ سَمْعِهِمْ ۖ وَعَلَىٰ أَبْصَارِهِمْ غِشَاوَةٌ ۖ وَلَهُمْ عَذَابٌ عَظِيمٌ  

{ختم الله على قلوبهم} طبع عليها واستوثق فلا يدخلها خير {وعلى سمعهم} أي مواضعه فلا ينتفعون بما يسمعونه من الحق {وعلى أبصارهم غشاوة} غطاء فلا يبصرون الحق {ولهم عذاب عظيم} قوي دائم.