tasya — his; sañjanayan — increasing; harṣam — cheerfulness; kuru-vṛddhaḥ — the grandsire of the Kuru dynasty (Bhīṣma); pitāmahaḥ — the grandfather; siṁha-nādam — roaring sound, like that of a lion; vinadya — vibrating; uccaiḥ — very loudly; śaṅkham — conchshell; dadhmau — blew; pratāpa-vān — the valiant.