Al-Kāfi
Hadith 11512ـ عَنْهُ عَنْ أَبِيهِ عَمَّنْ ذَكَرَهُ بَلَغَ بِهِ أَبَا جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ بِئْسَ الْعَبْدُ عَبْدٌ لَهُ طَمَعٌ يَقُودُهُ وَبِئْسَ الْعَبْدُ عَبْدٌ لَهُ رَغْبَةٌ تُذِلُّهُ.
2. It is narrated from him (narrator of the Hadith above) from his father from those whom he has mentioned in his book from abu Ja’far (a.s.) who has said the following: “Abu Ja’far (a.s.) has said, ‘The worst servant is the servant who has a greed that dominates him and so also is a servant whose desires humiliate him.’”