Ramayana
अथाब्रवीद्दशग्रीवो मातामहमुपस्थितम् । वित्तेशो गुरुरस्माकं नार्हसे वक्तुमीदृशम् ॥ 7-11-10 ॥
Then Dashagriva said to his maternal grandfather who stood before him: "The Lord of Wealth (Kubera) is our elder; you ought not to speak in such a manner."
english translation