God says
Yes, indeed: everyone who surrenders his whole being unto God, and is a doer of good withal, shall have his reward with his Sustainer; and all such need have no fear, and neither shall they grieve. -- Q.2:112
….It is possible that you dislike a thing that is good for you, and that you love anything that is bad for you. But God knows, and you know not. -- Q.2:216
Satan makes them promises and creates vain desires but Satan’s promises are nothing but deception. -- Q.4:120
Know [O men] that the life of this world is but a play and passing delight, and a beautiful show, and [the cause of] your boastful vying with one another,….- Q.57:20 * *
Commenting at length on this passage, Razi makes it clear that life as such is not to be despised, inasmuch as it has been created by God: cf. 38:27 – “ We have not created heaven and earth and all that is between them without meaning and purpose”; and 23:115 – “Did you think that We have created you in mere idle play?” But whereas life in itself is a positive gift of God and – as Razi points out – the potential source of all blessings, it loses this positive quality if it is indulged in recklessly, blindly and with disregard of spiritual values and considerations: in brief, if it is indulged in without any thought of hereafter.
Prophet said
1. “Wealth lies not in being very rich but in self- contentment”– H: Bukhari and Muslim. N: Abu Hurairah.
2. “Blessed is he who is guided to Islam, and whose livelihood is just sufficient and who is contented with it” -- H: Tirmizi. N: Fuzala-b-Ubaid.
3. “Of the beauty of Islam of a man is his giving up what does not concern him.” -- H: Maalik, Ahmed and Tirmizi. N: Ali-b-Husain.
