[Pooya/Ali Commentary 44:10] There was a severe famine in Makka, in which men were so weakened by hunger that they saw mist before their eyes when they looked at the sky. It is reported that it was as severe a drought as the seven years dry spell of the times of Yusuf. At last they came to the Holy Prophet and beseeched him to pray to Allah for immediate relief. He prayed and the relief came. The Holy Prophet said: "Dukhan refers to the smoke which will be seen on the day of judgement." This is a warning to those who reject the true faith. They will see smoke every where on the day of reckoning. It will envelop them as a grievous penalty. Aqa Mahdi Puya says: The penalty referred here will be inflicted upon the disbelievers before the actual reckoning. As this affliction will afflict the whole humanity, only that prophet who was sent to all mankind as a warner and a bearer of glad tidings and a mercy unto the worlds will alone be able to pray to Allah to remove it. The Quraysh had before them a messenger whose purity of life was known to them. They themselves called him al-amin (the trustworthy) and al sadiq (the truthful), yet they turned away from him and called him mad when he invited them to the worship of one God (Allah). Refer to Hijr: 6; Nahl: 103; Araf: 184. Though Allah gives respite to the disbelievers to see if that will bring them to the right path, but at last the final judgement will seize the irreclaimable from which there will be no escape.