الكافي- ط الاسلامية, volume 5, page 306

9. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad or others from ibn Mahbub from ‘Abd al-‘Aziz al-‘Abdiy from ‘Abd Allah ibn abu Ya’fur who has said the following: “I once heard abu ‘Abd Allah (a.s.), saying, ‘If one plants wheat in a land and it does not come pure or the plantation grows with a great deal of barley, it is because of the injustice of his work to the piece of land that he owns or it is because of the injustice of his workers. Allah, most Majestic, most Glorious, says, ‘. . . because of the injustice of Jews We made certain good things that were lawful, unlawful for them.’ (4:158) It was meat of camel, cow and sheep. He (the Imam) said, ‘Israel when eating the meat of camel would suffer pain in his lower back, thus he made eating of the meat of camel unlawful for himself, and this was before the coming of the Torah. When Torah came it did not make it unlawful but he did not eat.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

10. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from Ja’far ibn Muhammad ibn abu al-Sabbah from his father from his grandfather who has said the following: “This is concerning my question before abu ‘Abd Allah (a.s.), about the case of a man who becomes a friend of a young woman who gives him four thousand dirham and says, ‘If our friendship is destroyed you can return the dirhams to me.’ He works with it and makes profits. The young man marries and wants to repent, what should he do? He (the Imam) said, ‘He must return the dirhams and the profit belongs to him.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.