It is narrated from Hazrat Anas (may Allah be pleased with him) that regarding the manner of the recitation of the Prophet (peace and blessings be upon him), it is narrated that the Prophet (peace and blessings be upon him) used to prolong his voice.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 12283
Hadith Gradingحکم دارالسلام:إسناده صحيح ، خ : 5045