Musannaf Ibn Abi Shaybah 8831 — His saying: "Guard strictly

Zuhrah said: We were sitting in the mosque with Sayyiduna Zayd bin Thabit (may Allah be pleased with him). He was asked about the middle prayer, and he said: It refers to the Zuhr prayer. Sayyiduna Usamah (may Allah be pleased with him) passed by and was asked, and he said: It refers to the Zuhr prayer; the Prophet (peace and blessings be upon him) used to pray it at midday.