Sunan Ibn Majah, Book 5, Hadith 1414 (In-Book) ⓘ
It was narrated that Qatadah said; “I asked Anas bin Malik about the recitation of the Prophet and he said: ‘He used to elongate his voice.’”
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، حَدَّثَنَا جَرِيرُ بْنُ حَازِمٍ، عَنْ قَتَادَةَ، قَالَ سَأَلْتُ أَنَسَ بْنَ مَالِكٍ عَنْ قِرَاءَةِ النَّبِيِّ، ـ صلى الله عليه وسلم ـ فَقَالَ كَانَ يَمُدُّ صَوْتَهُ مَدًّا .
also referenced under: Hadith 1353 (Reference) & Volume 2, Book 5, Hadith 1353 (DarusSalam)