إِنَّمَا الْحَيَاةُ الدُّنْيَا لَعِبٌ وَلَهْوٌ ۚ وَإِن تُؤْمِنُوا وَتَتَّقُوا يُؤْتِكُمْ أُجُورَكُمْ وَلَا يَسْأَلْكُمْ أَمْوَالَكُمْ
[This] worldly life is only amusement and diversion. And if you believe and fear Allah, He will give you your rewards and not ask you for your properties.
Expressing the insignificance and worthlessness of the worldly life, Allah says,
﴿ إِنَّمَا ٱلۡحَيَوٰةُ ٱلدُّنۡيَا لَعِبٌ۬ وَلَهۡوٌ۬ۚ ﴾
(This worldly life is only amusement and diversion.) which means that such is its outcome, except for that which is done for the sake of Allah. Because of this, Allah says,
﴿ وَإِن تُؤۡمِنُواْ وَتَتَّقُواْ يُؤۡتِكُمۡ أُجُورَكُمۡ وَلَا يَسۡـَٔلۡكُمۡ أَمۡوَٲلَكُمۡ ﴾
(And if you believe and have Taqwa of Allah, He will grant you your rewards, and will not ask from you (to sacrifice all of) your possessions.) meaning, He is in no need of you, and asks you for nothing. He only ordained giving charity from your wealth so that you would help your needy brothers. The benefit of that would then come back to you, as well as the rewards.