﴿ لِيُنفِقْ ذُو سَعَةٍۢ مِّن سَعَتِهِۦ ۖ وَمَن قُدِرَ عَلَيْهِ رِزْقُهُۥ فَلْيُنفِقْ مِمَّآ ءَاتَىٰهُ ٱللَّهُ ۚ لَا يُكَلِّفُ ٱللَّهُ نَفْسًا إِلَّا مَآ ءَاتَىٰهَا ۚ سَيَجْعَلُ ٱللَّهُ بَعْدَ عُسْرٍۢ يُسْرًۭا ﴾

“[In all these respects,] let him who has ample means spend in accordance with his amplitude; and let him whose means of subsistence are scanty spend in accordance with what God has given him: God does not burden any human being with more than He has given him - [and it may well be that] God will grant, after hardship, ease.”

Let the affluent man expend on the divorced or the suckling woman out of his affluence. And let he whose provision has been straitened restricted for him expend of what God has given him in accordance with his means. God does not charge any soul save except with what He has given it. God will assuredly bring about ease after hardship — which He indeed did by way of the Muslim conquests.