Sahih Muslim , Book 47, Hadith 4 (In-Book) ⓘ
Jundub (i. e. Ibn 'Abdullah) reported that Allah's Messenger said: Recite the Qur'an as long as your hearts agree to do so and when you find variance between them, then stand up.
حَدَّثَنِي إِسْحَاقُ بْنُ مَنْصُورٍ، أَخْبَرَنَا عَبْدُ الصَّمَدِ، حَدَّثَنَا هَمَّامٌ، حَدَّثَنَا أَبُو عِمْرَانَ، الْجَوْنِيُّ عَنْ جُنْدَبٍ، - يَعْنِي ابْنَ عَبْدِ اللَّهِ - أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " اقْرَءُوا الْقُرْآنَ مَا ائْتَلَفَتْ عَلَيْهِ قُلُوبُكُمْ فَإِذَا اخْتَلَفْتُمْ فَقُومُوا " .
also referenced under: Hadith 2667 (Reference) & Book 34, Hadith 6445 (USC-MSA)