O king, do not insult the son of Shantanu, Bhishma, by erroneously thinking that he does not know what is the great Dharma.
न हि धर्मं परं जातु नावबुध्येत पार्थिवः। भीष्मः शान्तनवस्त्वेनं मावमंस्थास्त्वमन्यथा॥