Obligation to Support Islamic Causes

هَـٰٓأَنتُمْ هَـٰٓؤُلَآءِ تُدْعَوْنَ لِتُنفِقُوا۟ فِى سَبِيلِ ٱللَّهِ فَمِنكُم مَّن يَبْخَلُ ۖ وَمَن يَبْخَلْ فَإِنَّمَا يَبْخَلُ عَن نَّفْسِهِۦ ۚ وَٱللَّهُ ٱلْغَنِىُّ وَأَنتُمُ ٱلْفُقَرَآءُ ۚ وَإِن تَتَوَلَّوْا۟ يَسْتَبْدِلْ قَوْمًا غَيْرَكُمْ ثُمَّ لَا يَكُونُوٓا۟ أَمْثَـٰلَكُم

Here you are - those invited to spend in the cause of Allāh - but among you are those who withhold [out of greed]. And whoever withholds only withholds [benefit] from himself; and Allāh is the Free of need, while you are the needy. And if you turn away [i.e., refuse], He will replace you with another people; then they will not be the likes of you.