Sunan Ibn Majah, Chapter: The Chapters of Establishing the Prayer and the Sunnah Regarding Them

"Sad bin Abu Waqqas came to us when he had become blind. I greeted him with Salam and he said: 'Who are you?' So I told him, and he said: 'Welcome, O son of my brother. I have heard that you recite Quran in a beautiful voice. I heard the Messenger of Allah (saw) say: "This Quran was revealed with sorrow, so when you recite it, then weep. If you cannot weep then pretend to weep, and make your voice melodious in reciting it. Whoever does not make his voice melodious, he is not one of us." Sahih