Mbh 2.24.1a

Vaisampayana said,--“thus addressed, Bhima firmly resolved upon slaying Jarasandha, replied unto Krishna of the Yadu race, saying,--O tiger of the Yadu race, O Krishna, this wretch that yet stayeth before me with sufficient strength and bent upon fight, should not be forgiven by me. Hearing these words of Vrikodara (Bhima), that tiger among men, Krishna, desiring to encourage that hero to accomplish the death of Jarasandha without any delay, answered,--‘O Bhima, exhibit today upon Jarasandha the strength thou hast luckily derived, the might thou hast obtained from (thy father), the god Maruta.’ Thus addressed by Krishna, Bhima, that slayer of foes, holding up in the air the powerful Jarasandha, began to whirl him on high. And, O bull of the Bharata race, having so whirled him in the air full hundred times, Bhima pressed his knee against Jarasandha’s backbone and broke his body in twain. And having killed him thus, the mighty Vrikodara uttered a terrible roar. And the roar of the Pandava mingling with that death knell of Jarasandha, while he was being broken on Bhima’s knee, caused a loud uproar that struck fear into the heart of every creature. And all the citizens of Magadha became dumb with terror and many women were even prematurely delivered. And hearing those roars, the people of Magadha thought that either the Himavat was tumbling down or the earth itself was being rent asunder. And those oppressors of all foes then, leaving the lifeless body of the king at the palace gate where he lay as one asleep, went out of the town. And Krishna, causing Jarasandha’s car furnished with an excellent flagstaff to be made ready and making the brothers (Bhima and Arjuna) ride in it, went in and released his (imprisoned) relatives. And those kings rescued from terrible fate, rich in the possession of jewels, approaching Krishna made presents unto him of jewels and gems.