In Anuśāsanaparva (Anusasanaparva) of Mahābhārata (Mahabharata), it is said that Sage Cāruśīrṣa (Charusirsha) is the friend of Indra, king of the gods. He is called Ālamvāyana (Alamvayana), because he belongs to the Ālamva(Alamva)  gotra (clan).