Ramayana
विभीषणश्च रक्षोभिश्चतुर्भिः परिवारितः । उपासते महात्मानं धनेशमिव गुह्यकाः ॥ 7-37-20 ॥
And Vibhishana, surrounded by four rakshasas, attended upon the great-souled one, just as the Guhyakas attend upon the Lord of Wealth (Kubera).
english translation