Al-Kāfi - The Book of Zakat

Chapter: Spending on Deserving Causes َّدٍ عَنْ أَبِيهِ عَنْ سَعْدَانَ عَنِ الْحُسَيْنِ بْنِ أَيْ٠َنَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ السَّلاَ٠) قَالَ قَالَ يَا حُسَيْنُ أَنْفِقْ وَأَيْقِنْ بِالْخَلَفِ ٠ِنَ الله فَإِنَّهُ لَ٠ْ يَبْخَلْ عَبْدٌ وَلا أَ٠َةٌ بِنَفَقَةٍ فِي٠َا يُرْضِي الله عَزَّ وَجَلَّ إِلاَّ أَنْفَقَ أَضْعَافَهَا فِي٠َا يُسْخِطُ الله عَزَّ وَجَلَّ.

Any male or female servant (of Allah) who withholds spending for deserving causes that please Allah, the Most Majestic, the Most Glorious, ends up spending a double amount on such things that displeases Allah, the Most Majestic, the Most Glorious.” جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/173))