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:4:82 –

Then do they not reflect upon the Qur'an? If it had been from ˹any˺ other than Allah, they would have found within it much contradiction.  

What, do they not ponder, do they ˹not˺ contemplate, the Qur’ān?, and the marvellous truths contained in it. If it had been from other than God surely they would have found therein much inconsistency, ˹much˺ contradiction in meaning and irregularity in arrangement.
القرآن:٤:٨٢ –

أَفَلَا يَتَدَبَّرُونَ الْقُرْآنَ ۚ وَلَوْ كَانَ مِنْ عِنْدِ غَيْرِ اللَّهِ لَوَجَدُوا فِيهِ اخْتِلَافًا كَثِيرًا  

{أفلا يتدبرون} يتأملون {القرآن} وما فيه من المعاني البديعة {ولو كان من عند غير الله لوجدوا فيه اختلافا كثيرا} تناقضا في معانيه وتباينا في نظمه.