﴿ لِلْفُقَرَآءِ ٱلَّذِينَ أُحْصِرُوا۟ فِى سَبِيلِ ٱللَّهِ لَا يَسْتَطِيعُونَ ضَرْبًۭا فِى ٱلْأَرْضِ يَحْسَبُهُمُ ٱلْجَاهِلُ أَغْنِيَآءَ مِنَ ٱلتَّعَفُّفِ تَعْرِفُهُم بِسِيمَٰهُمْ لَا يَسْـَٔلُونَ ٱلنَّاسَ إِلْحَافًۭا ۗ وَمَا تُنفِقُوا۟ مِنْ خَيْرٍۢ فَإِنَّ ٱللَّهَ بِهِۦ عَلِيمٌ ﴾

“[And give] unto [such of] the needy who, being wholly wrapped up in God's cause, are unable to go about the earth [in search of livelihood]. He who is unaware [of their condition] might think that they are wealthy, because they abstain [from begging]; [but] thou canst recognize them by their special mark: they do not beg of men with importunity. And whatever good you may spend [on them], verily, God knows it all.”

Please check ayah 2:274 for complete tafsir.