﴿ وَلَا تَجْعَلْ يَدَكَ مَغْلُولَةً إِلَىٰ عُنُقِكَ وَلَا تَبْسُطْهَا كُلَّ ٱلْبَسْطِ فَتَقْعُدَ مَلُومًۭا مَّحْسُورًا ﴾

“And neither allow thy hand to remain shackled to thy neck, nor stretch it forth to the utmost limit [of thy capacity], lest thou find thyself blamed [by thy dependants], or even destitute.”

Please check ayah 17:30 for complete tafsir.