Now, the answer is very simple. If you look at the physical birth and shape and qualities of people, this question will be answered immediately. Physically, everybody is not endowed with the same qualities in body, in form, in beauty, in so many things. People are born differently, gifted differently by Allah. So that means spiritually it would be the case. Now, the requirement by Allah is not that you produce beyond your power.
What excellence means in the eyes of Allah is that whatever you have been endowed with, you put it to the last limit. You achieve the given objective to the last limit of your capacity. So, no one has been treated unfairly. It is a ratio which is important in the eyes of Allah. If a man has been given all these higher capabilities and does not perform in a manner as to meet the requirements of those capabilities, then that man has fallen short. If a man is born with much smaller capabilities and he fulfills the requirements of those capabilities to the body, he will be considered an excellent man in the eyes of Allah.
NiSo, despite these differences, there is nothing for man to complain. Because Allah would judge according to Ussa. This is the most beautiful verse. The Ussa chain is, and everybody would be judged according to his Ussa, so no unfairness involved at any stage.
