(73:15) Indeed, We have sent to you a Messenger as a witness upon you just as We sent to Pharaoh a messenger. (73:16) But Pharaoh disobeyed the messenger, so We seized him with a ruinous seizure. (73:17) Then how can you fear, if you disbelieve, a Day that will make the children white- haired? (73:18) The heaven will break apart therefrom; ever is His promise fulfilled. (73:19) Indeed, this is a reminder, so whoever wills may take to his Lord a way. (73:20) Indeed, your Lord knows, [O Muhammad], that you stand [in prayer] almost two thirds of the night or half of it or a third of it, and [so do] a group of those with you. And Allah determines [the extent of] the night and the day. He has known that you [Muslims] will not be able to do it and has turned to you in forgiveness, so recite what is easy [for you] of the Qur`an. He has known that there will be among you those who are ill and others traveling throughout the land seeking [something] of the bounty of Allah and others fighting for the cause of Allah. So recite what is easy from it and establish prayer and give zakah and loan Allah a goodly loan. And whatever good you put forward for yourselves - you will find it with Allah. It is better and greater in reward. And seek forgiveness of Allah. Indeed, Allah is Forgiving and Merciful.
