Hanzalah bin Qays asked Rafi' bin Khadij (may Allah be pleased with him) about renting out land, and he said: "The Messenger of Allah (peace and blessings be upon him) forbade it." I said: For gold and silver? Rafi' (may Allah be pleased with him) said: There is no harm in it for gold and silver.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المزارعة / 11717