Translation of the verse 30 from Surah Saba’ : Number of verses 54 - - page 431 - Part 22.
Say (O Muhammad SAW): "The appointment to you is for a Day, which you cannot put back for an hour (or a moment) nor put forward."
Say, "For you is the appointment of a Day [when] you will not remain thereafter an hour, nor will you precede [it]."
(34:30) Say: 'Your day is appointed, you can neither hold back its coming by an hour, nor hasten it by an hour.' *49
*49) In other words, the reply means: "Allah's judgments arc not subject to your whims that He should be bound to do a thing at the time which you have fixed for it. He carries out His designs only according to His own discretion. You cannot understand how long is mankind to be allowed to function in this world in the scheme of Allah, how many individuals and how many nations are to be put to the test in different ways, and what Will be the right time for the Day of Judgment and summoning mankind of all ages for rendering their accounts. All this will be accomplished only at the time which Allah has fixed for it in His scheme of things. Your demands can neither hasten it on by a second nor your supplications can withhold it by a second. "