7. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from Safwan from Ishaq ibn ‘Ammar who has said the following:

“Abu ‘Abd Allah , has said, ‘If you lease a piece of land in exchange for gold or silver, then do not lease it to someone else for more than what you have leased; but if you lease it in exchange for one-half or one-third of the produce you can lease it to someone else for more, because gold and silver are guaranteed.’”