Shantanu had seen him only once, a few minutes after his birth; therefore, he had not sufficient recollection to identify that youth with his son.
जातमात्रं पुरा दृष्ट्वा तं पुत्रं शान्तनुस्तदा। नोपलेभे स्मृति धीमानभिज्ञातुं तमात्मजम्॥ तदद्भुतं ततो