Katha Upanishad - Verse 2.2.13
Text: नित्योऽनित्यानां चेतनश्चेतनानामेको बहूनां यो विदधाति कामान् । तमात्मस्थं येऽनुपश्यन्ति धीरास्तेषां शान्तिः शाश्वतीनेतरेषाम् ॥ १३ ॥ nityo’nityānāṃ cetanaścetanānāmeko bahūnāṃ yo vidadhāti kāmān | tamātmasthaṃ ye’nupaśyanti dhīrāsteṣāṃ śāntiḥ śāśvatīnetareṣām || 13 || 13. Eternal among the ephemeral, conscious among the conscious, who, being one, dispenses desired objects to many, the intelligent who see him seated in their selves, to them, eternal peace, not to others. Shankara’s Commentary: Again, deathless among mortal things, conscious among the conscious, such as Brahma and other living beings....