O king, be thou, O giver of honours, righteous in thy conduct towards the sons of Pandu. Surrounded by them, thou wouldst be unconquerable by thy foes. If a relative shrinks in the presence of a prosperous relative, like a deer at sight of a hunter armed with arrows, then the prosperous relative hath to take upon himself all the sins of the other. O best of men, repentance will be thine (for this thy inaction at present) when in future thou wilt hear of the death of either the Pandavas or thy sons.

In plain words: Vidura tells the king to treat the Pandavas fairly, because with them at his side no enemy could defeat him. If a relative is afraid of a powerful relative, like a deer before a hunter, the powerful one carries the blame. He warns that the king will regret his inaction when he hears of the death of either the Pandavas or his own sons.