Surah Al-Isra 17:29

وَلَا تَجْعَلْ يَدَكَ مَغْلُولَةً إِلَىٰ عُنُقِكَ وَلَا تَبْسُطْهَا كُلَّ ٱلْبَسْطِ فَتَقْعُدَ مَلُومًا مَّحْسُورًا

And do not make your hand [as] chained to your neck or extend it completely and [thereby] become blamed and insolvent.

Translation: Saheeh International

Tafsir

And do not keep your hand chained to your neck in other words do not withhold it completely from expending nor open it in order to expend completely or you will sit blameworthy — this refers to the first case — and denuded cut off having nothing — this refers to the latter case.

Excerpt from Tafsir al-Jalalayn, commentary on 17:29, via Quran.com. The reader has the full commentary and 9 more tafsirs.