Volume 3, Book 39, Number 523:
Narrated ‘Amr:
I said to Tawus, “I wish you would give up Mukhabara (Share-cropping), for the people say that
the Prophet forbade it.” On that Tawus replied, “O ‘Amr! I give the land to share-croppers and help
them. No doubt; the most learned man, namely Ibn ‘Abbas told me that the Prophet had not forbid –
den it but said, ‘It is more beneficial for one to give his land free to one’s brother than to charge him
a fixed rental.”