Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) reports that the Prophet (peace and blessings be upon him) said: "The people of Sayyiduna Lut (peace be upon him) were destroyed only at the adhan, and the Hour too will be established only at the adhan." Al-Tabarani states: Allah knows best, but in my view its meaning is: this will happen at the time of the adhan of Fajr, which is the time of seeking forgiveness and supplication.
Al-Tabarani recorded it, and its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 11115