Sayyiduna Abu Hurayrah (may Allah be pleased with him) reports this saying of the Prophet (peace and blessings be upon him): "If there were a hundred or more people in this mosque, and among them there were one man of the people of Hell, and he breathed, then because of his breath the mosque and everyone in it would be burned."
Abu Ya'la recorded it from his teacher Ishaq, and he did not state his lineage. If he is Ishaq bin Rahawayh, then its narrators are the narrators of the Sahih; and if he is someone else, then I do not know him.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب صفة أهل النار / 18602
Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "If there were a hundred thousand or more people in the mosque, and then a man from the people of Hell breathed there, it would burn them all."
Al-Bazzar recorded it; its chain contains Abd al-Rahim bin Harun, who is da'if (weak). Ibn Hibban mentioned him in the book "al-Thiqat" and said: "His hadith is taken into consideration when he narrates from his written record, because when he narrates hadith from memory some munkar (objectionable) narrations are found in it." The rest of its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب صفة أهل النار / 18603