Bhagavad Gita Chapter 10.25
maharṣīṇāḿ bhṛgur ahaḿ
girām asmy ekam akṣaram
yajñānāḿ japa-yajño ’smi
sthāvarāṇāḿ himālayaḥ
Translation
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.