مَا يَنظُرُونَ إِلَّا صَيۡحَةٗ وَٰحِدَةٗ تَأۡخُذُهُمۡ وَهُمۡ يَخِصِّمُونَ ٤٩
They do not await except one blast1 which will seize them while they are disputing.
Translation: Saheeh International (English)
1 Literally, "cry" or "shriek," meaning the first blast of the Horn which will strike dead every living thing on the earth without warning.
Each word's meaning and sound
But all these deniers of resurrection who regard it as far-fetched are waiting for is the first blast when it is blown into the trumpet, which will suddenly overtake them while they are in their worldly concerns of buying, selling, irrigating and herding and other worldly concerns.
Al-Mukhtasar in interpreting the Noble Quran