佛祖統紀 33.16

33.16

Inexhaustible Wealth: When there are abundant flowers offered to the Buddha, it is permitted to resell them to purchase incense and oil. If there is still an excess, it is resold into the inexhaustible wealth (from the *Mahāsāṃghika Vinaya*; the *Essence of the Buddhist Order* says: 'This is what worldly people call "perpetual cash"; it is named "inexhaustible" because principal and interest multiply').