It is reported that ‘Imrān b. Husayn – Allāh be pleased with him – was once relating hadīth amongst a group of people, when a man said:

Leave this and give us something from the Book of Allāh. ‘Imrān said, “You are a dunce (stupid). Do you find in the Book of Allāh details of prayer. Do you find in the Book of Allāh details of fasting!? This Qur`ān prescribes those matters, and the Sunnah explains them.”

Al-Harawī, Dham Al-Kalām article 244, et al with various wordings.