«اعبد الله كأنك تراه فإن لم تكن تراه فإنه يراك واحسب نفسك مع الموتى واتق دعوة المظلوم فإنها مستجابة»
The Prophet (peace and blessings be upon him) said:
"Worship Allah as though you see Him, and if you cannot see Him, then (be certain that) He surely sees you. Count yourself among the dead, and beware of the supplication of the oppressed, for it is certainly answered."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 1037