1534. hadíth
وَ فِي تَوْقِيعَاتِ اَلرِّضَا عَلَيْهِ اَلسَّلاَمُ إِلَى إِبْرَاهِيمَ بْنِ مُحَمَّدٍ اَلْهَمَذَانِيِّ: «إِنَّ اَلْخُمُسَ بَعْدَ اَلْمَئُونَةِ».
In one of the writings of al-Ridha (Imam Ali ibn Musa al-Ridha (a.s)) addressed to Ibrahim ibn Muhammad al-Hamadhani, it is stated: "Khums is due after deducting expenses."