Chapter on Times of Prayer and Sign of Each of Its Times

And from him, from Muhammad ibn Ziyad, from Ali ibn Abi Hamzah, from Abu Abdillah عليه السلام: Abu Basir said to Him عليه السلام: “How much is a ‘qamah’?” Imam عليه السلام said: “A ‘dhira’ (forearm). Indeed, the ‘qamah’ of the saddle of the Messenger of Allah سبحانه وتعالى, may Allah سبحانه وتعالى bless him and his family, was a ‘dhira’.”