According to the theologians...
According to the theologians, the otherworldly rewards are not only the receipt of otherworldly pleasures and enjoyments but rather they are accompanied by God’s expression of special praise, honor, recognition and appreciation. That is, on the Day of Resurrection God shall express His special praise, honor, recognition and appreciation to the doers of good, and also give them their otherworldly rewards.
It is clear that special honor and praise are unacceptable unless they are worthy of them, and it is like the case of an ignorant person who is honored in the way the learned are honored. The merit of receiving such special honor and praise depends on the outcome of the test to be given to them. Religious obligation, in reality, is the very scheme for this divine test.
Taklīf , therefore, provides the ground to man to earn merit to receive otherworldly rewards, and there is no doubt concerning the goodness of such important motive.[^5] The religious obligations are manifestations of grace in relation to the rational obligations because whenever a person observes acts of worship and religious commands such as the ritual prayer, fasting, zakāt and the like, he is more prepared to observe rational obligations such as acquisition of knowledge, recognition of the rights of individuals, justice, avoidance of injustice, and the like.
Any manifestation of grace, for that purpose, is acceptable, nay obligatory.[^6] The purpose behind the creation of the human being is for him to attain proximity to God ( qurb ilallāh ), thereby achieving his ideal perfection.
On one hand, the essence of man consists of two faculties – intellect or reason ( ‘aql ) and carnal desire ( shahwah ) – which are somehow opposite to each other, and the felicity of man lies in his ability to set the faculty of shahwah under the control of ‘aql so as to address all his physical needs and also to attain spiritual perfections.
The materialization of this purpose requires a precise and comprehensive program through which extremes on any of the two faculties could be prevented, and the principle of justice could prevail over the material and spiritual life of man. On one hand, most people could not grasp such a program. In fact, no one could know the most perfect form of this program.