Whoever strives does it entirely for himself. Allah is Rich Beyond Need of any being. (Qur'an, 29:6)
He Who possessed knowledge of the Book said, 'I will bring it to you before your glance returns to you.' And when he (Sulayman) saw it standing firmly in his presence, he said, 'This is part of my Lord's favour to test me to see if I will give thanks or show ingratitude. Whoever gives thanks only does so to his own gain. Whoever is ungrateful, my Lord is Rich Beyond Need, Generous.' (Qur'an, 27:40)
Mankind! you are the poor in need of Allah whereas Allah is the Rich Beyond Need, the Praiseworthy. (Qur'an, 35:15)
Musa said, 'If you were to be ungrateful, you and everyone on the earth, Allah is Rich Beyond Need, Praiseworthy.' (Qur'an, 14:8)
Correct and courteous words accompanied by forgiveness are better than charity followed by insulting words. Allah is Rich Beyond Need, All-Forbearing. (Qur'an, 2:263)
Here you are then: people who are called upon to spend in the Way of Allah and then some of you are tight-fisted! But whoever is tight-fisted is only tight-fisted to himself. Allah is Rich and you are poor. If you turn away, He will replace you with a people other than yourselves and they will not be like you. (Qur'an, 47:38)