خَلْفهِۦ

Appears 3 times in the Quran. (Root: خلف)
  1. For his sake there are angels following one another, before him and behind him, who guard him by Allah's commandment; surely Allah does not change the condition of a people until they change their own condition; and when Allah intends evil to a people, there is no averting it, and besides Him they have no protector.

  2. Falsehood shall not come to it from before it nor from behind it; a revelation from the Wise, the Praised One.

  3. Except to him whom He chooses as a messenger; for surely He makes a guard to march before him and after him,