This sūrah of 59 verses was revealed in Makkah toward the end of the Makkan period. It derives its name from the word dukhān (smoke) in verse 10. It warns the obstinate enemies of the Messenger, upon him be peace and blessings, of the punishments that might come upon them, and reminds them of how and why the Pharaoh and his army were drowned in the sea. It also concentrates upon the Qur’ān’s Divine authorship, on God’s being the unique Creator and Lord of the whole universe and, therefore, the Only One to be worshipped. It concludes with mention of the final end of the believers and their enemies.