ما مِن عَبدٍ يَمنَعُ دِرهَما في حَقِّهِ إلاّ أنفَقَ اثنَينِ في غَيرِ حَقِّهِ .
Imam Ja‘far al-Ṣadiq (as):
No sooner does a servant withhold the spending of a dirham in its rightful place than he will end up spending two dirhams outside of its rightful place.
Source:
al-Kāfī
Vol3
P504
ID: 27098