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:41:41 –

Indeed, those who disbelieve in the message after it has come to them... And indeed, it is a mighty Book.  

Truly those who disbelieve in the Remembrance — the Qur’ān — when it comes to them …, We will requite them — and truly it is an unassailable Book:
القرآن:٤١:٤١ –

إِنَّ الَّذِينَ كَفَرُوا بِالذِّكْرِ لَمَّا جَاءَهُمْ ۖ وَإِنَّهُ لَكِتَابٌ عَزِيزٌ  

{إن الذين كفروا بالذكر} القرآن {لما جاءهم} نجازيهم {وإنه لكتاب عزيز} منيع.