Tafsir of Ya seen 36:49

They await only but a single Sayhah which will seize them while they are disputing! meaning, they are only waiting for a single shout which -- and Allah knows best -- will be the trumpet blast of terror when the Trumpet will be blown while the people are in their marketplaces and places of work, arguing and disputing as they usually do. While in this state, Allah will command Israfil to blow into the Trumpet, so he will sound a long note and there will be no one left on the face of the earth except he will tilt his head to listen to the sound coming from heaven. Then the people who are alive will be driven to the gathering place by a fire which will surround them on all sides. Allah says: