Al-Kāfi - Volume 3 > Who Can Lawfully Receive Zakat and Who Cannot
Hadith #2

2ـ حَمَّادُ بْنُ عِيسَى عَنْ حَرِيزِ بْنِ عَبْدِ الله عَنْ زُرَارَةَ بْنِ أَعْيَنَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ الْسَّلام) قَالَ سَمِعْتُهُ يَقُولُ إِنَّ الصَّدَقَةَ لاَ تَحِلُّ لِمُحْتَرِفٍ وَلاَ لِذِي مِرَّةٍ سَوِيٍّ قَوِيٍّ فَتَنَزَّهُوا عَنْهَا.

2. Hammad ibn ‘Isa has narrated from Hariz ibn ‘Abd Allah from Zurarah ibn ’A‘yan who has said the following: “I once heard abu Ja‘far, ‘Alayhi al-Salam, saying, ‘Charity (Zakat) is not lawful for those who have an established profession or a resourceful one who is capable and strong, so keep yourselves clean from receiving charity (Zakat).”’