The Tābi‘īs (may Allah have mercy upon them) were most keen on learning knowledge and the Sunnah of the Messenger of Allah (may Allah's peace and blessings be upon him) from his Companions (may Allah be pleased with them), as they observed all aspects of the Prophet's Sunnah and were keen to teach them to those who came after them. In this Hadīth, the Tābi‘ī ‘Umar ibn ‘Atā’ says that Nāfi’ ibn Jubayr sent him to the Companion As-Sā’ib nephew of Namir (may Allah be pleased with him) to ask him about something that Mu‘āwiyah ibn Abi Sufyān (may Allah be pleased with him), who was then the Commander of the Faithful, had seen As-Sā’ib do in prayer, and of which Mu‘āwiyah had expressed disapproval. He said: 'Yes' i.e., I will answer your question. He informed him that he offered the Friday prayer with Mu‘āwiyah (may Allah be pleased with him) in the enclosure, a chamber in the mosque for the caliphs and governors. Mu‘āwiyah ibn Abi Sufyān (may Allah be pleased with him) was the first to establish it, after one of the Khrijites struck him and attempted to kill him. So, he wanted to protect himself therein. When the Imām made Taslīm, As-Sā’ib stood up in his place where he offered the Friday prayer to perform the supererogatory prayer, without anything that separates it from the obligatory prayer. As Mu‘āwiyah (may Allah be pleased with him) entered his house, he sent a messenger to call him. When he went to him, he said to him: Never do what you did again, offering the supererogatory prayer in the place of the obligatory prayer directly thereafter. If you have performed the Friday prayer, do not couple it with another prayer, until you speak to someone or move from the place of your prayer. For example, he may offer the supererogatory prayer at home. This is intended to safeguard the obligatory prayer, lest anyone may add to it what is not part of it with the passage of time, and lest ignorant people may think the supererogatory prayer is part of the obligatory one. Then, Mu‘āwiyah (may Allah be pleased with him) said that the Messenger of Allah (may Allah's peace and blessings be upon him) commanded them not to follow up a prayer with another prayer until they speak or leave the mosque or the place of the obligatory prayer, by moving from it. In the Hadīth: Separating the supererogatory prayer from the obligatory one, either by speaking or by moving from its place And in it: The ruler should give sincere advice to his subjects and demonstrate what is correct to them..