COMMENTARY on 47:36
A. Yusuf Ali:

Translation:
The life of this world is but play and amusement: 4860 and if you believe and guard against Evil, He will grant you your recompense, and will not ask you (to give up) your possessions. 4861
Commentary:

4860  Cf. 6:32 , and n. 855; and 29:64, and n. 3497. Amusement and play are not bad things in themselves. As preparations for the more serious life, they have their value. But if we concentrate on them, and neglect the business of life, we cannot prosper. So we must use our life in this world as a preparation for our spiritual or inner life.

4861  Complete self-sacrifice, if voluntarily offered, has a meaning: it means that the person's devotion is exclusively and completely for the Cause. But no law or rule can demand it. And a mere offer to kill yourself has no meaning. You should be ready to take risks to your life in fighting for the Cause, but you should aim at life, not death. If you live, you should be ready to place your substance and your acquisitions at the disposal of the Cause. But it is not reasonable to pauperise yourself and become a hanger-on for the Cause. Moreover, the inborn tendency to self-preservation in an average man would lead to concealment and miserliness if all were asked for the Cause, by Law, and there would further be a feeling of bitterness and rebellion.

 

Muhammad Asad:

Translation:
The life of this world is but a play and a passing delight: but if you believe [in God] and are conscious of Him, He will grant you your deserts. And withal, He does not demand of you [to sacrifice in His cause all of] your possessions: 41
Commentary:
41  Although the life of this world is "but a play and a passing delight", God does not want to deprive the believers of its rightful enjoyment: and so He expects them to sacrifice only a small part of their possessions in His cause. This passage evidently foreshadows the imposition of the obligatory annual tax called zakah ("the purifying dues"), amounting to about 2.5 percent of a Muslims’s income and property, as pointed out by most of the classical commentators in connection with the above verse (hence my interpolation). The proceeds of this tax are to be utilized in what the Qur’an describes as "the cause [lit., "way"] of God", i.e., for the defense and propagation of the Faith and the welfare of the community; and its spiritual purpose is the "purification" of a Muslim’s possessions from the blemish of greed and selfishness. (It is to be noted that the payment of zakah was made obligatory at the very beginning of the Medina period, that is, at approximately the same time as the revelation of the present surah.)