Bhagavad Gita · 1.12

तस्य सञ्जनयन्हर्षं कुरुवृद्धः पितामहः।सिंहनादं विनद्योच्चैः शङ्खं दध्मौ प्रतापवान्॥

tasya sañjanayan harṣhaṁ kuru-vṛddhaḥ pitāmahaḥ siṁha-nādaṁ vinadyochchaiḥ śhaṅkhaṁ dadhmau pratāpavān

Then Bhishma, the grand old patriarch of the Kuru dynasty, roared like a lion and blew his conch loudly, bringing joy to Duryodhana.

— Bhagavad Gita 1.12

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)