BG 1.12

तस्य सञ्जनयन्हर्षं कुरुवृद्धः पितामहः ।
सिंहनादं विनद्योच्चैः शङ्खं दध्मौ प्रतापवान् ॥१२॥

tasya sañjanayan harṣaṁ
kuru-vṛddhaḥ pitāmahaḥ
siṁha-nādaṁ vinadyoccaiḥ
śaṅkhaṁ dadhmau pratāpavān

1 times this text was mentioned in purports to other texts: LBG(1)

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.

Text

Then Bhīṣma, the great valiant grandsire of the Kuru dynasty, the grandfather of the ﬁghters, blew his conchshell very loudly, making a sound like the roar of a lion, giving Duryodhana joy.

Purport

The grandsire of the Kuru dynasty could understand the inner meaning of the heart of his grandson Duryodhana, and out of his natural compassion for him he tried to cheer him by blowing his conchshell very loudly, beﬁtting his position as a lion. Indirectly, by the symbolism of the conchshell, he informed his depressed grandson Duryodhana that he had no chance of victory in the battle, because the Supreme Lord Kṛṣṇa was on the other side. But still, it was his duty to conduct the ﬁght, and no pains would be spared in that connection.

Bhagavad Gita As It Is.

Chapter 1: Observing the Armies on the Battlefield of Kuruksetra. Text 12

1 times this text was mentioned in purports to other texts: LBG(1)

Then Bhīṣma, the great valiant grandsire of the Kuru dynasty, the grandfather of the ﬁghters, blew his conchshell very loudly, making a sound like the roar of a lion, giving Duryodhana joy.