Nasai

´It was narrated that Abu Sa'eed said:` "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.

´It was narrated from Hammad -Ibn Abi Sulaiman- that he was asked about a man who hired a worker in return for food and he said:` "No, not until he tells him (what his wages will be)."

´It was narrated from Hammad and Qatadah, concerning a man who said to another man:` "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."

´It was narrated that Ibn Juraij said:` "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.'"