Bhishma said I think there is no doubt in this. Listen to me, O you of great wisdom. I shall answer you. The question you have asked is indeed proper. It is easy to entertain doubt. But the solution of that doubt is difficult.
भीष्म उवाच नास्त्यत्र संशयः कश्चिदिति मे वर्तते मतिः। शृणु वक्ष्यामि ते प्राज्ञ सम्यक् तवं मेऽनुपृच्छसि॥ संशयः सुगमस्तत्र दुर्गमस्तस्य निर्णयः।