Mbh 7.157.3b

Who is there that will resist that Partha who gratified Rudra himself (in battle)?” Thus railed at by Saradwat’s son, Karna, that foremost of smiters, answered Kripa in the following strain, “Heroes always roar like clouds in the season of rains, and like steeds put in the soil, quickly yield fruits. I do not see any fault in heroes that take great burdens on their shoulders, indulging in boastful speeches on the field of battle. When a person mentally resolves to bear a burden, Destiny itself aids him in the execution. Wishing in my heart bear a great burden, I always summon sufficient resolution. If, slaying the sons of Pandu with Krishna and Satwatas in battle, I indulge in such roars, what is it to thee, O Brahmana? They that are heroes never roar fruitlessly like autumnal clouds. Conscious of their own might, the wise indulge in roars! In my heart I am determined to vanquish in battle today Krishna and Partha united together and fighting with resolution! It is for this that I roar, O son of Gotama! Behold the fruit of these my roars, O Brahmana! Slaying the son of Pandu in battle, with all their followers, Krishna and Satwatas, I will bestow on Duryodhana the whole earth without a thorn in it.”