Mbh 12.166.4g

From Pratardana it was received by Ashtaka, and from Ashtaka by Prishadaswa. From Prishadaswa it was received by Bharadwaja, and from the last by Drona. After Drona it was taken by Kripa. From Kripa that best of swords has been obtained by thee with thy brothers. The constellation under which the sword was born is Krittika. Agni is its deity, and Rohini is its Gotra.[482] Rudra is its high preceptor. The sword has eight names which are not generally known. Listen to me as I mention them to you. If one mentions these, O son of Pandu, one may always win victory. Those names then are Asi, Vaisasana, Khadga, sharp-edged, difficult of acquisition, Sirgarbha, victory, and protector of righteousness. Of all weapons, O son of Madravati, the sword is the foremost. The Puranas truly declare that it was first wielded by Mahadeva. As regards the bow, again, O chastiser of foes, it was Prithu who first created it. It was with the aid of this weapon that that son of Vena, while he governed the earth virtuously for many years, milked her of crops and grain in profusion. It behoveth thee, O son of Madri, to regard what the Rishis have said, as conclusive proof. All persons skilled in battle should worship the sword. I have now told thee truly the first portion of thy query, in detail, about the origin and creation of the sword, O bull of Bharata's race! By listening to this excellent story of the origin of the sword, a man succeeds in winning fame in this world and eternal felicity in the next."'"