Musannaf Ibn Abi Shayba 33:1318

Yazid ibn Harun narrated to us, he said: Salam ibn Miskin informed us, he said: Al-Hasan narrated to us, he said: A man from the companions of the Prophet, may Allah bless him and grant him peace, passed by a man who was reciting a verse, weeping, and repeating it. He said: "Have you not heard the saying of Allah the Exalted: 'And recite the Qur'an with measured recitation' (73:4)? This is the measured recitation."