When Bhishma, that foremost one of Kuru's race, will disappear from the world every kind of knowledge will go away with him. It is, therefore, that I urge you to do it.
तस्मिन्नस्तमिते भीष्मे कौरवाणां धुरंधरे। ज्ञानान्यस्तं गमिष्यन्ति तस्मात्त्वां चोदयाम्यहम्॥