Bhagwad Gita
Chapter 10, Verse 25
महर्षीणां भृगुरहं गिरामस्म्येकमक्षरम्।
यज्ञानां जपयज्ञोऽस्मि स्थावराणां हिमालयः।।10.25।।
Of the great sages I am Bhrgu; of vibrations I am the transcendental om. Of sacrifices I am the chanting of the holy names [japa], and of immovable things I am the Himalayas.