The Prophet ﷺ said, "Take a midday nap, for Satan does not take a midday nap."
عن النبي ﷺ قال: قيلوا، فإن الشيطان لا يقيل.
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Abu Naeem narrated it in Akhbar Isbahan (1951), from Muhammad bin Ibrahim bin Ali (that is, Ibn Muqri), and his hadith is in his Mujam (647). He said, I read in the handwriting of my father Ibrahim bin Ali, who said, Muhammad bin Umar, the brother of Rustah, told us, Abu Dawud (that is, Tayalisi) told us, Imran Qattan told us, from Qatada, from Anas, who said, and then he related it. (It is not found in Musnad Tayalisi.)Its chain of transmission is hasan because of Imran bin Dawwar Qattan, for there is disagreement about him, though he is hasan al-hadith when he does not contradict others and does not bring anything objectionable, and he has some chains of transmission that one should not be too pleased about. It is also supported by the stopped report from Umar bin Khattab.Abdul-Razzaq narrated it in his Musannaf (19874), from Mamar, from Saeed bin Abdul-Rahman Jahshi, from Abu Bakr bin Muhammad bin Amr bin Hazm, from Saaib bin Yazid, who said, Umar bin Khattab used to pass by us around midday or shortly before it and say, "Get up and take your midday nap, for whatever remains of the day belongs to Satan." Its narrators are trustworthy.It also has a daif corroborating report narrated by Ibn Abbas as a saying of the Prophet, "Seek help through the pre-dawn meal for fasting during the day, and through the midday nap for standing in prayer at night." Ibn Khuzayma narrated it in his Sahih (1939), and in its chain of transmission is Zama bin Salih, who is considered daif by the scholars. It has already been discussed in the book on fasting.