Surah Al-Baqarah 2:273

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

[Charity is] for the poor who have been restricted for the cause of Allāh, unable to move about in the land. An ignorant [person] would think them self-sufficient because of their restraint, but you will know them by their [characteristic] sign. They do not ask people persistently [or at all]. And whatever you spend of good - indeed, Allāh is Knowing of it.

Translation: Saheeh International

Tafsir

For the poor this is the predicate of the missing subject al-sadaqāt ‘voluntary almsgiving’ who are constrained in the way of God those who have confined themselves in preparation for the struggle this was revealed concerning the people of Suffa consisting in some four hundred of the Emigrants muhājirūn set apart from …

Excerpt from Tafsir al-Jalalayn, commentary on 2:273, via Quran.com. The reader has the full commentary and 9 more tafsirs.