Sayyiduna Imran bin Husayn (may Allah be pleased with him) said: We performed tamattu' with the Messenger of Allah (peace and blessings be upon him), and the Qur'an was revealed about it; so let a man say, from his own opinion, whatever he wishes.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15324