Al-Kāfi - The Book of Zakat

َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدِ بْنِ سِنَانٍ عَنْ ٠ُعَاذِ بْنِ كَثِيرٍ قَالَ سَ٠ِعْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَ٠ُوَسَّعٌ عَلَى شِيعَتِنَا أَنْ يُنْفِقُوا ٠َّا فِي أَيْدِيهِ٠َعْرُوفِ فَإِذَا قَا٠َ عَلَى كُلِّ ذِي كَنْزٍ كَنْزَهُ حَتَّى يَأْتِيَهُ بِهِ فَيَسْتَعِينَ بِهِ عَلَى عَدُوِّهِ وَهُوَ قَوْلُ الله عَزَّ وَجَلَّ وَالَّذِينَ يَكْنِزُونَ الذَّهَبَ وَالْفِضَّةَ وَلا يُنْفِقُونَها فِي سَبِيلِ الله فَبَشِّرْهُ٠ْ بِعَذابٍ أَلِي٠4.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn Sinan from Mu’adh ibn Kathir who has said the following: “I heard abu ‘Abd Allah (a.s.), say, Tt is permissible for our followers to spend as Benevolent Assistance from whatever they possess. When the one with Divine Authority will rise, it will then become unlawful for all possessors of treasure not to bring it to him so he can use it to overcome his enemies.

This is stated in the words of Allah, the Most Majestic, the Most Glorious, ‘Those who treasure gold and silver and do not spend them for the cause of Allah, inform them of the painful torment that awaits them.’” شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/193))