As nothing is a heavy task to Vishnu, in the matter of destroying his enemies. Agni gave to the son of Pritha the excellent bow Gandiva.
व्यवसायसहायस्य विष्णोः शत्रुवधेष्विव। पार्थायाग्निर्ददौ चापि गाण्डीवं धनुरुत्तमम्॥