Ramayana
अथाब्रवीद्वैश्रवणः पितामहमुपस्थितम् । भगवँल्लोकपालत्वमिच्छेयं वित्तरक्षणम् ॥ 7-3-15 ॥
Then Vaishravana said to the Grandsire who stood before him: "O Lord, I desire the office of a guardian of the worlds, the guardianship of wealth."
english translation