Translation
(66) Virtues of the Qur'an
كتاب فضائل القرآن
(37) Chapter: Recite the Qur'an together as long as you agree about its interpretation
(37) باب اقْرَءُوا الْقُرْآنَ مَا ائْتَلَفَتْ قُلُوبُكُمْ
Sahih al-Bukhari 5060 

Narrated `Abdullah:

The Prophet (ﷺ) said, "Recite (and study) the Qur'an as long as you agree about its interpretation, but if you have any difference of opinion (as regards to its interpretation and meaning) then you should stop reciting it (for the time being).

حَدَّثَنَا أَبُو النُّعْمَانِ، حَدَّثَنَا حَمَّادٌ، عَنْ أَبِي عِمْرَانَ الْجَوْنِيِّ، عَنْ جُنْدَبِ بْنِ عَبْدِ اللَّهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ اقْرَءُوا الْقُرْآنَ مَا ائْتَلَفَتْ قُلُوبُكُمْ، فَإِذَا اخْتَلَفْتُمْ فَقُومُوا عَنْهُ ‏"‏‏.‏
Reference : Sahih al-Bukhari 5060
In-book reference : Book 66, Hadith 85
USC-MSA web (English) reference : Vol. 6, Book 61, Hadith 580
  (deprecated numbering scheme)