Surah Al-Baqarah, verse 273

لِلْفُقَرَآءِ ٱلَّذِينَ أُحْصِرُوا۟ فِى سَبِيلِ ٱللَّهِ لَا يَسْتَطِيعُونَ ضَرْبًا فِى ٱلْأَرْضِ يَحْسَبُهُمُ ٱلْجَاهِلُ أَغْنِيَآءَ مِنَ ٱلتَّعَفُّفِ تَعْرِفُهُم بِسِيمَـٰهُمْ لَا يَسْـَٔلُونَ ٱلنَّاسَ إِلْحَافًا ۗ وَمَا تُنفِقُوا۟ مِنْ خَيْرٍ فَإِنَّ ٱللَّهَ بِهِۦ عَلِيمٌ ﴿٢٧٣﴾

2:273 [Charity is] for the poor who are fully occupied in the cause of Allah, unable to move about in the land [for livelihood]; the one who is unaware would think that they are rich because of their self-restraint. You will recognize them by their appearance. They do not ask people importunately. And whatever wealth you give, then Allah is All-Knowing of it