After the war was over and pandavas had returned to Hastinapura....one day early morning, Udhishthira saw Sri Krishna was in deep meditation and Udhishthira wondered why the lord himself should be in dhyana and SriKrishna told him that.. Bhishma...." lying in the battle field has gathered his senses in his mind, gathered his mind in his intellect, his intellect in his Atman, and in his Atman he has now enshrined me by the power of his contemplation". Then SriKrishna told everybody that Bhishma is wanting to give up his body and before he does that, they all should go to him and get all their doubts on dharma clarified from him.

So they all go the battle field and when Sri kKrishna tells Bhishma that Udhishthira has come and he has some doubts, Bhishma looks at Sri Krishna in great pain..and says I am not even able to speak now ...for so many days I am lying in the battle field on the beds of arrows ....world is setting around me..now I want to give up...hearing this the Lord runs his eyes over Bhishma's body and Bhishma feels strength coming back to him and he tells Sri Krishna that I feel like a young man again...strong as a yuva...then he starts explaining all the dharma...