الكافي- ط الاسلامية, volume 5, page 197

1. A number of our people have narrated from Ahmad ibn Muhammad from Ali ibn al-Hakam from Muhammad ibn Aslam from abu Hamzah who has said the following: “I once asked abu Ja’far (a.s.), about the case of a man who buys goods altogether for a certain price, then sets a price for each piece proportionately until all of his capital is covered; if he can sell it in the form of Murabahah (capital plus a certain percent profit). He (the Imam) said, ‘No, he cannot do so until he makes it clear that the item has a fixed price.’”

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

2. Ali ibn Ibrahim has narrated from his father from ibn abu ‘ Umayr from Hammad from al-Halabiy who has said the following: “Abu ‘Abd Allah (a.s.), has said that once goods for my father came from Egypt. He (the Imam) prepared food and invited the merchants. They said, ‘We buy from you Be dah dawazdah. He (the Imam) asked, ‘How much is that?’ They replied, ‘It is two thousand on every ten thousand.’ My father said to them, ‘I sell this to you for twelve thousand.’ He (the Imam) sold it to them in the form of Musawamah (fixed price regardless of the capital).”

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

3. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from al-Nadr ibn Suwayd from al-Qasim ibn Sulayman from Jarrah al-Mada’iniy who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘I do not like the sale in the form of dah, yaz dah, and dah dawazdah but I sell for so and so (fixed price).”’

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

4. Al-Husayn from Muhammad has narrated from Mu’alla’ ibn Muhammad from al-Hassan ibn Ali from Aban ibn ‘Uthman from Muhammad who has said the following: “Abu ‘Abd Allah, ‘Alayhi al-Salam, has said, ‘I do not like the sale of ten for eleven and ten for twelve and so on. I sell for so and so (fixed price) in the form of Musawamah (fixed price regardless of capital).’ He (the Imam) then said, ‘Once goods from Egypt came for me and I disliked selling it in that way ( Murabahah (capital plus profit)) and it seemed greatly heavy, so I sold it in the form of Musawamah (fixed price regardless of capital).”’

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