'Abdullâh bin Mas'ûd said, "When the Prophet (ﷺ) saw the refusal of the people to accept Islâm, he said, 'O Allâh ! Send (on them) seven (famine years) like the seven years (of famine during the time) of (Prophet ﷺ) Yûsuf (Joseph) '. So drought overtook them for one year and destroyed every kind of life to such an extent that the people started eating hides, carcasses and rotten dead animals. Whenever one of them looked towards the sky, he would (imagine himself to see smoke because of hunger. So Abu Sufyân went to the Prophet (ﷺ) and said, 'O Muḥammad ! You order people to obey Allâh and to keep good relations with kith and kin. No doubt the people of your tribe are dying, so please invoke Allâh for them. ' So Allâh revealed: " Then wait you for the Day when the sky will bring forth a visible smoke and " Verily ! You will revert. On the Day when We shall seize you with the greatest grasp " (V.44:10,16). (Ibn Mas'ud added) Al-Batsha (i.e. grasp) happened in the battle of Badr and no doubt (Ad-Dukhan) smoke, Al-Batsha, Al-Lizâm, and the Verse of Sûrah Ar-Rum have all passed. [2:121-O.B.]