Al-Kāfi - Volume 5 > Performing Personally one’s Business Tasks
Hadith #1

1- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ مُحَمَّدِ بْنِ عِيسَى بْنِ عُبَيْدٍ عَنْ يُونُسَ عَنْ رَجُلٍ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) أَنَّهُ قَالَ بَاشِرْ كِبَارَ أُمُورِكَ بِنَفْسِكَ وَكِلْ مَا شَفَّ إِلَى غَيْرِكَ قُلْتُ ضَرْبَ أَيِّ شَيْ‏ءٍ قَالَ ضَرْبَ أَشْرِيَةِ الْعَقَارِ وَمَا أَشْبَهَهَا.

1. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa ibn ‘Ubayd from Yunus from a man who has said the following: “Abu ‘ Abd Allah, ‘Alayhi al-Salam, has said that you must do the greater tasks of your affairs personally and assign others to perform the easier ones. I then asked, ’Like what kinds of tasks are they?’ He (the Imam) answered, ’Like real estate deals and similar tasks.”’