Al-Kāfi - Volume 5 > Hard Work for the Family
Hadith #3

3- مُحَمَّدُ بْنُ إِسْمَاعِيلَ عَنِ الْفَضْلِ بْنِ شَاذَانَ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ رِبْعِيِّ بْنِ عَبْدِ اللهِ عَنْ فُضَيْلِ بْنِ يَسَارٍ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ إِذَا كَانَ الرَّجُلُ مُعْسِراً فَيَعْمَلُ بِقَدْرِ مَا يَقُوتُ بِهِ نَفْسَهُ وَأَهْلَهُ وَلا يَطْلُبُ حَرَاماً فَهُوَ كَالْمُجَاهِدِ فِي سَبِيلِ اللهِ.

3. Muhammad ibn ‘Isma’il has narrated from al-Fadl ibn Shadhan from ibn abu ‘Umayr from Rib’iy ibn ‘Abd Allah from Fudayl ibn Yasar who has said the following: “Abu ‘Abd Allah, ‘Alayhi al-Salam, has said, ‘If one has difficulty in providing for his family and works to meet his own needs and the needs of his family and does not work for unlawful kind of sustenance, he is like a Mujahid (fighter) for the cause of Allah.”