Language:
كتاب التوحيد
97
Oneness, Uniqueness of Allah (Tawheed)
(44)
Chapter: “And whether you keep your talk secret or disclose it. Verily, He is the All-Knower of what is in the breasts (of men)….”
(44)
Sahih al-Bukhari 7527

Narrated Abu Salama:

Abu Huraira said, "Allah's Messenger (ﷺ) said, 'Whoever does not recite Qur'an in a nice voice is not from us,' and others said extra," (that means) to recite it aloud."

حَدَّثَنَا إِسْحَاقُ، حَدَّثَنَا أَبُو عَاصِمٍ، أَخْبَرَنَا ابْنُ جُرَيْجٍ، أَخْبَرَنَا ابْنُ شِهَابٍ، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لَيْسَ مِنَّا مَنْ لَمْ يَتَغَنَّ بِالْقُرْآنِ ‏"‏‏.‏ وَزَادَ غَيْرُهُ ‏"‏ يَجْهَرُ بِهِ ‏"‏‏.‏
Reference : Sahih al-Bukhari 7527
In-book reference : Book 97, Hadith 152
USC-MSA web (English) reference : Vol. 9, Book 93, Hadith 618
  (deprecated numbering scheme)