jarasandha mace

The distance between Jarasandha’s capital and Mathura was 101 yojanas, but Narada told Jarasandha that it was 100 yojanas. 

Consequently, the mace Jarasandha threw dropped one yojana before Mathura, and the city was saved.

This mace hit Jara, who had joined the two portions of Jarasandha’s body (She was like a mother to Jarasandha and so the name Jarasandha. Jarasandha = Jara + Sandha = Jara is the name of demon lady who saved Jarasandha and Sandha means joining) and enabled him to survive, and thus Jara was killed. 
 

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