Mujahid bin Jabir مجاهد بن جبر · The Book of Agriculture

"When you hire a worker, tell him what his wages will be."

It was narrated from Al-Hasan that he disliked to hire a man without telling him what his wages would be.

"No, not until he tells him (what his wages will be)."

"I will lease (something) from you until I reach Makkah for such and such a payment, and if I travel for a month or such and such -something that he named- I will give you such and such in addition." They did not see anything wrong with that, but they did not like it if he said: "If I travel for more than a month I will deduct such and such from your lease."

"I said to 'Ata': 'What if I hire a slave for a year in return for his food, and for another year, in return for such and such?' He said: 'There is nothing wrong with that, and you may stipulate your conditions of hiring even for a few days.' 'How about if I make a deal to hire him when part of the year has passed?' He said: 'Do not hold me to account for what has passed.'"

"O Banu Harithah, a calamity has befallen you." They said: "What is it?" He said: "The Messenger of Allah has forbidden leasing land." We said: "O Messenger of Allah, what if we lease it in return for some of the grain?" He said, "No." He said: "We used to lease it in return for straw." He said: "No." "We used to lease it in return for what is planted on the banks of a stream that is used for irrigation."…

"Rafi' bin Khadij came to us and said: 'The Messenger of Allah has forbidden for you Al-Haql. Al-Haql is the third and the fourth. And Al-Muzabanah. Al-Muzabanah is to buy what is at the top of the date-palm trees in return for a certain number of Wasqs of dried dates.'"