Dāśarathee himself is capable of subduing the celestials, Asuras and great serpents-he is simply awaiting the fulfilment of your promise.
कामं खलु शरैः शक्तः सुरासुरमहोरगान्। वशे दाशरथिः कर्तुं त्वत्प्रतिज्ञामवेक्षते॥