I asked Imam (as) about a man who gives his land, which has water, palm trees, and fruits, to another man and says, "Irrigate this with water, cultivate it, and you will have half of what Allah (swt), the Mighty and Glorious, produces from it." Imam (as) said: "There is no harm in it." I also asked him about a man who gives another man a piece of ruined land and says, "Rebuild it, and it is yours for three years, or four, or five years, or for whatever period you decide." Imam (as) said: "There is no harm in that." I further asked Imam (as) about a man who owns a piece of land from the lands subject to tax (kharaj) with a fixed tax, which sometimes increases and sometimes decreases. He leases it to another man under the condition that the lessee will cover its tax and pay him two hundred dirhams annually. Imam (as) said: "There is no harm in that."