The supplication of the one wronged

Beware of the supplication of the one wronged. For indeed it is carried on the clouds. Allaah says: I swear by My 'Izzah and by My Jalaal I will surely help you even if after a while.

اتقوا دعوه المظلوم فإنها تحمل على الغمام يقول الله تعالى
(وعزتي وجلالي لأنصرنك ولو بعد حين)
صحيح الجامع:117