Without encountering Bhishma in battle why do you boast? Like that fool who used to boast without ever ascending the Gandhamadana mountain,
असमागम्य भीष्मेण संयुगे किं विकत्यसे। आरुरुक्षुर्यथा मन्दः पर्वतं गन्धमादनम्॥