It is narrated from Hazrat Thawban (may Allah be pleased with him) that when this verse was revealed: "Those who hoard gold and silver and do not spend it in the way of Allah..." — he says that at that time we were accompanying the Noble Prophet (peace and blessings be upon him) on a journey. So a companion (may Allah be pleased with him) asked: The command regarding gold and silver has been revealed, but if we could know which wealth is best, we would keep that with us. The Noble Prophet (peace and blessings be upon him) said: The best wealth is a tongue that remembers (Allah), a grateful heart, and a Muslim wife who helps him in his faith.