´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)."
Hadith ReferenceSunan an-Nasa'i / The Book of Agriculture / Hadith: 3890
Hadith Gradingالألبانی:صحيح مقطوع | زبیر علی زئی:إسناده حسن