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.