sa taḿ praviṣṭaḿ vṛtam ātatāyibhir
bhaṭair anīkair avalokya mādhavaḥ
udyamya maurvaḿ parighaḿ vyavasthito
yathāntako daṇḍa-dharo jighāḿsayā
sah -- He, Aniruddha; tam -- him, Banasura; pravishtam -- entered; vritam -- surrounded; atatayibhih -- who were carrying weapons; bhataih -- by guards; anikaih -- numerous; avalokya -- seeing; madhavah -- Aniruddha; udyamya -- raising; maurvam -- made of muru iron; parigham -- His club; vyavasthitah -- standing firm; yatha -- like; antakah -- death personified; danda -- the rod of punishment; dharah -- bearing; jighamsaya -- ready to strike.
The club was not made of ordinary iron but of a special kind called muru.