The Book of Agriculture
35b/44: Chapter
The Third Of The Conditions, In It Is Sharecropping (Muzara'ah) And Contracting
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ حَاتِمٍ، قَالَ أَنْبَأَنَا حِبَّانُ، قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ، عَنْ جَرِيرِ بْنِ حَازِمٍ، عَنْ حَمَّادٍ، - هُوَ ابْنُ أَبِي سُلَيْمَانَ - أَنَّهُ سُئِلَ عَنْ رَجُلٍ، اسْتَأْجَرَ أَجِيرًا عَلَى طَعَامِهِ قَالَ لاَ حَتَّى تُعْلِمَهُ.
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)."
Reference : Sunan an-Nasa'i 3859In-book reference : Book 35b, Hadith 3English translation : Vol. 4, Book 35, Hadith 3890