Ramayana
युष्मत्तो भयभीतानां देवानां वै मया ऽभयम् । राक्षसोत्सादनं दत्तं तदेतदनुपाल्यते ॥ 7-8-7 ॥
To the gods who were stricken with fear of you I granted safety, and I pledged the destruction of the Rakshasas; that very pledge is now being fulfilled."
english translation