Al-Kāfi - Volume 5 > Unlawful Earnings in the form of al-Suht such as Buying and Selling of Intoxicating Liquors . . .
Hadith #6

6- عَلِيُّ بْنُ مُحَمَّدٍ عَنْ صَالِحِ بْنِ أَبِي حَمَّادٍ عَنْ غَيْرِ وَاحِدٍ عَنِ الشَّعِيرِيِّ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ مَنْ بَاتَ سَاهِراً فِي كَسْبٍ وَلَمْ يُعْطِ الْعَيْنَ حَظَّهَا مِنَ النَّوْمِ فَكَسْبُهُ ذَلِكَ حَرَامٌ.

6. Ali ibn Muhammad has narrated from Salih ibn abu Hammad from more than one person from al-Shu’ayriy who has said the following: “Abu ‘Abd Allah, ‘Alayhi al-Salam, has said, ‘If one works the whole night without giving the eyes their share of sleep, such earning is unlawful.’”