After the war, while on his deathbed (arrow bed) Bhishma gave deep and meaningful instructions to Yudhishthira on statesmanship and the duties of a king. Bhishma always gave priority to Dharma. He always walked in path of Dharma, even though his circumstances because of his promise, he was supposed to forcefully follow the orders of his king Dhritharashtra, which were mostly Adharma, he was totally upset. In between the Kurukshetra War Lord Krishna advised Bhishma that, when duties are to be followed you have to follow them without looking for the promises, if those promises are making path for sadness to the society it has to be broken at that point itself and should be given priority to the moral duty only. Finally Bhishma gave up the fight, focusing his life force and breath, sealing the wounds, and waiting for the auspicious moment to give up his body on the arrow bed.