Abu Dawud
Commercial Transactions
Book Number: 016 / Hadith Number: 3387
Narated By Rafi' ibn Khadij : Hanzalah ibn Qays said that he asked Rafi' ibn Khadij about the lease of land. He replied: The Apostle of Allah (pbuh) forbade the leasing of land. I asked: (Did he forbid) for gold and silver (i.e. dinars and dirhams)? He replied: If it is against gold and silver, then there is no harm in it.