اِلَّا مَنِ ارۡتَضٰي مِنۡ رَّسُوۡلٍ فَاِنَّهٗ يَسۡلُكُ مِنۭۡ بَيۡنِ يَدَيۡهِ وَمِنۡ خَلۡفِهٖ رَصَدًاۙ‏

Except whom He has approved of messengers, and indeed, He sends before each messenger and behind him observers