 रामेण हि प्रतिज्ञातं हर्यृक्षगणसन्निधौ।।उत्सादनममित्राणां सीता यैस्तु प्रधर्षिता। 
 "Rama made a vow in the presence of bears and vanaras that he would exterminate the arrogant enemy troops  by whom Sita is abducted and assaulted. 