Aqil bin Khalid bin 'Aqil عقيل بن خالد بن عقيل الأيلي · Commercial Transactions (Kitab Al-Buyu)

The Messenger of Allah (ﷺ) 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.