Imam Zuhri narrates that once we were with Umar bin Abdul Aziz, and he delayed the Asr prayer. So Urwah bin Zubair said to him: Bashir bin Abi Mas’ud Ansari narrated this hadith to me that once Sayyiduna Mughirah bin Shu’bah (may Allah be pleased with him) also delayed the Asr prayer, so Sayyiduna Abu Mas’ud (may Allah be pleased with him) said to him: By Allah, Mughirah! You know that once Jibreel (peace be upon him) descended and led the prayer, and the Prophet (peace and blessings be upon him) and the companions (may Allah be pleased with them) also prayed at that time. In this way, he came at the time of each of the five prayers and specified the time. Upon hearing this hadith, Umar bin Abdul Aziz (may Allah have mercy on him) said: Urwah! Speak thoughtfully, did Jibreel (peace be upon him) specify the time of prayer? Urwah (may Allah have mercy on him) replied: Yes! Bashir bin Abi Mas’ud narrated the hadith to me in this way. After that, until Umar bin Abdul Aziz departed from this world, he would determine the time of prayer by its sign.