Discontentment is a trait of an impatient individual whose very own intolerant disposition prevents them from receiving rewards from Allah. Moreover, their sinful behavior leads them to being overwhelmed by their difficulties. Consequently, they are besieged by two afflictions: problems in their religion caused by their unhappiness and the weight of the hardship that befell them in the first place.
To the contrary, the truly patient believer controls him or herself at the onset of their difficulty. Yes, they do not like that this calamity has happened to them, but they patiently control themselves. He or she refrains from uttering anything or doing anything that would anger Allah. Nor does this believer harbor ill-feelings in their heart towards the Most Wise. In spite of their trials and mishaps, this person is patient. The contented one is at ease and totally calm during their adversity as though nothing has occurred.
Patient and grateful believers express their gratitude to Allah for whatever befalls them. This was the way of the Messenger of Allah. Whenever he saw something that displeased him, he would say, “Praise belongs to Allah.”
Hence, displaying gratitude to Allah results in Allah giving this person a reward greater than the misery they suffered. Case in point, once there was a devout believing woman who possessed a serious ailment in her fingers. Despite the pain, she constantly praised Allah. “How is it that you praise Allah and you’re suffering great pain in your fingers?” she was asked. She replied, “The sweetness of its reward causes me to disregard the bitterness of patience.” Allah is the One who grants success.
Tawheed First 