الكافي- ط الاسلامية, volume 5, page 212

14. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Zurarah who has said the following: “Once I was sitting with abu ‘Abd Allah (a.s.), when a man came in with his son. Abu ‘Abd Allah (a.s.), asked, ‘What kind of business does your son do?’ He replied, ‘He sells slaves.’ Abu ‘Abd Allah (a.s.), said, ‘You must not buy what is defective physically or morally. When you buy a head, you must not show its price on balance; whatever head sees its price in the balance it does not succeed. When you buy a head change its name, feed it something sweet and when you become the owner give four dirham charity for it.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

15. A number of our people have narrated from Sahl ibn Ziyad from Ibrahim ibn ‘Uqbah from Muhammad ibn Muyassir from his father who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘One who looks at his own price when he is weighed, he does not succeed.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

16. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from Rifa’ah who has said the following: “I once asked abu al-Hassan, Musa (a.s.), about the case of a man who shares a slave-girl with another man and says, ‘If we made profit half is for you, if it is a loss then there is nothing on you.’ He (the Imam) said, ‘I do not see anything unlawful in it if the owner of the slave-girl agrees without compulsion.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

17. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hammad from al-Halabiy who has said the following: “This is concerning my question before abu ‘ Abd Allah (a.s.), about the case of slave- girls and conditions that say, ‘She must not be sold or transferred in inheritance or given as gift.’ He (the Imam) said, ‘It is lawful except inheritance; she is inherited. Any condition against the book of Allah is rejected.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

18. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn ‘Abd al-Hamid from abu Jamilah who has said the following: “Once I visited abu ‘Abd Allah (a.s.), and he asked, ‘Young man, what you do for a living?’ I replied, ‘It is slaves.’ He (the Imam) said, ‘I recommend you so keep my recommendations safe. You must not buy physically or morally defective ones. You must make the guarantees strong and firm.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.