The Prophet ﷺ said, "Delay the noon prayer until it cools down, for the intensity of the heat is from the blazing of Hellfire."
عن النبي ﷺ قال: ابردوا بالظهر، فإن شدة الحر من فيح جهنم.
Imam Ahmad narrated it (18306) from Waki, and Yaala and Tabarani in Al-Kabir (8/7399) via the route of Abdullah bin Yusuf Firyabi and Abu Naeem, all of them from Bashir bin Sulayman, from Qasim bin Safwan Zuhri, from his father, who related the hadith. Its isnad is hasan, and it turns on Qasim bin Safwan, from whom Shaybi, Ashath, and Bashir narrated, as mentioned by Bukhari in Tarikh al-Kabir (7/161). Ibn Abu Shayba narrated it through his route (1/325), as did Hakim in Al-Mustadrak (3/251), though he did not give a ruling on it. Ibn Hibban mentioned him in Ath-Thiqat (5/304), and Ibn Khalfun in Ath-Thiqat as mentioned by the Hafiz in At-Tajil (223), so he does not fall below the rank of "saduq." As for Abu Hatim's statement that he is known only through the hadith of the prayer times, this does not harm him once we know that he does not fall below the rank of "saduq."As for what was narrated from Mughira bin Shuba, who said, "We used to pray Dhuhr with the Messenger of Allah ﷺ at midday, and he said to us, 'Delay the prayer until it cools, for intense heat is from the breath of Hell,'" this is daif. Ibn Majah narrated it (680) via the route of Ishaq bin Yusuf, from Sharik, from Bayan bin Bishr, from Qays bin Abu Hazim, from Mughira bin Shuba, who related the like of it. Its isnad is daif because of Sharik, namely Ibn Abdullah Nakhai Kufi the judge. Ibn Mubarak said, "Sharik's hadith amounts to nothing." Juzjani said, "He had poor memory, his hadith is disordered, and he leans." Daraqutni said, "Sharik is not strong in what he narrates alone."Dhahabi defended him, saying, "Sharik was among the vessels of knowledge. Ishaq Azraq carried from him nine thousand hadiths. Nasai said, 'There is no harm in him,' and Muslim included Sharik's narration as corroboration." End of quote.I say, this hadith is not something Sharik narrated alone, for others corroborated him, as Bayhaqi transmitted in his Sunan (1/439), from Abu Isa Tirmidhi, who said, "According to what has reached me from him, I asked Muhammad" - meaning Bukhari - "about this hadith, and he counted it as preserved, and said, 'Others besides Sharik narrated it from Bayan, from Qays, from Mughira.'" Then Bayhaqi said, "Abu Isa narrated it from Umar bin Ismail bin Mujalid, from his father, from Bayan, just as Bukhari said." End of quote.I say, I did not find this statement of Abu Isa Tirmidhi in his Sunan, nor in his Ilal, nor in his Shamail, so look where Tirmidhi transmitted Bukhari's statement.As for Busiri, he said in Zawaid bin Majah, "This isnad is sahih, and its men are reliable. Ibn Hibban narrated it in his Sahih (1505) from Muhammad bin Abdul-Rahman Sami, who said, Ahmad bin Hanbal narrated to us, who said, Ishaq bin Yusuf narrated to us, from Sharik, and he related it with its exact wording and text."I say, Ahmad narrated it in his Musnad (18185) from Ishaq bin Yusuf Azraq in the same manner. Abu Hatim mentioned another flaw. His son Abdul-Rahman asked him about a hadith narrated by Ishaq Azraq, from Sharik, from Bayan, from Qays, from Mughira bin Shuba, from the Prophet ﷺ, and he related the hadith. Abu Muhammad Abdul-Rahman bin Imam Abu Hatim said, "Abu Awana narrated it from Tariq, from Qays, who said, 'I heard Umar bin Khattab say his statement, "Delay the prayer until it cools."'" Abu Hatim said, "I fear that this hadith negates that hadith." He said, "I said, 'Which of the two is more likely correct?'" He said, "It seems this one," meaning the hadith of Umar bin Khattab. Abu Hatim said elsewhere, "If Qays had this from Mughira, from the Prophet ﷺ, he would not have needed to resort to narrating it from Umar as a stopped report." End of quote.I say, it was also narrated from Umar bin Khattab as a raised report, mentioned by Haythami in Al-Majma (1/306), attributing it to Abu Yaala and Bazzar, and he said, "It contains Muhammad bin Hasan bin Zubala, who has been attributed to fabricating hadith."