Al Muakhkhir – The Deferrer

He who sets back or delays whatever He wills.
“We sent Noah to his People (with the Command): “Do thou warn thy people before there comes to them a grievous Penalty.” He said: “O my People! I am to you a Warner, clear and open: “That ye should worship Allah, fear Him, and obey me: “So He may forgive you your sins and GIVE YOU RESPITE FOR A STATED TERM:
for when the Term given by Allah is accomplished, it cannot be put forward: if ye only knew.”
(71:1…4) The Holy Quran
(51:56…58) The Holy Quran
From the root
a-kh-r with the
classical Arabic
connotations:
to cause to go
back, backwards,
retreat, recede,
retire
to put behind 
to cause to remain behind, hang back, lag behind
to postpone.
Allah delays or postpones. He puts off advancement.
He holds back or keeps something back to put it in its proper place.
He causes something to lag behind.

Quran tells us: The Holy Quran (75:13)