1427. hadíth
وَ سَأَلَ عَبْدُ اَلرَّحْمَنِ بْنُ أَبِي عَبْدِ اَللَّهِ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: عَنِ اَلْعَبْدِ بِالْعَبْدَيْنِ وَ اَلْعَبْدِ بِالْعَبْدِ وَ اَلدَّرَاهِمِ فَقَالَ "لاَ بَأْسَ بِالْحَيَوَانِ كُلِّهَا يَداً بِيَدٍ".
Abd al-Rahman ibn Abi Abdullah asked Abu Abdullah (a.s) about exchanging one slave for two slaves, or one slave for another slave along with dirhams. Imam (a.s) said: "There is no harm in exchanging all types of animals hand-to-hand."