'Abdullah bin Shaqiq reported that 'Uthman (RA) used to forbid Tamattu', whereas 'Ali (RA) ordered to do it. 'Uthman said a word to 'Ali, but 'Ali said: You know that we used to perform Tamattu' with the Messenger of Allah (ﷺ) , whereupon he said: It is right, but we entertained fear.