1419. hadíth
وَ قَالَ عَلَيْهِ اَلسَّلاَمُ: "لَيْسَ بَيْنَ اَلرَّجُلِ وَ بَيْنَ وَلَدِهِ رِبًا وَ لَيْسَ بَيْنَ اَلسَّيِّدِ وَ بَيْنَ عَبْدِهِ رِبًا ".
Imam (a.s) said: "There is no usury between a man and his child, and there is no usury between a master and his servant."