tam bhikseta vrkodarah
hanisyati na sandeho
dvai-rathe tava sannidhau
Bhima should go to him disguised as a brahmana and beg charity. Thus he will obtain single combat with Jarasandha, and in Your presence Bhima will no doubt kill him.
The idea is that Bhima should beg as charity a one-to-one fight with Jarasandha.