BG 12.3
ये त्वक्षरमनिर्देश्यमव्यक्तं पर्युपासते
सर्वत्रगमचिन्त्यं च कूटस्थमचलं ध्रुवम्
ye tvakṣaramanirdeśyamavyaktaṃ paryupāsate
sarvatragamacintyaṃ ca kūṭasthamacalaṃ dhruvam
TRANSLATION
But those who meditate on the Imperishable (i.e., the self) the indefinable, the unmanifest, omnipresent, unthinkable, common to all beings, immovable and constant;