Shankaracharya's commentary, trans. Alladi Mahadeva Sastry (1897)
[1]But distinct is the Highest Spirit spoken of as the Supreme Self, the indestructible Lord who penetrates and sustains the three worlds.
BG 15.17
उत्तमः पुरुषस् त्व् अन्यः परमात्मेत्य् उदाहृतः । यो लोकत्रयम् आविश्य बिभर्त्य् अव्यय ईश्वरः ॥
uttamaḥ puruṣas tv anyaḥ paramātmety udāhṛtaḥ | yo loka-trayam āviśya bibharty avyaya īśvaraḥ ||
"Beyond both stands the uttama Puruṣa — Paramātmā, the inexhaustible Lord pervading and sustaining all three worlds."
4 translations · all pre-1928 or released to public domain · sources
But distinct is the Highest Spirit spoken of as the Supreme Self, the indestructible Lord who penetrates and sustains the three worlds.
But there is another, the Supreme Purusha, called the Highest Self, the immutable Lord, who pervading the three worlds, sustains them.
But the being supreme is yet another, called the highest self, who as the inexhaustible lord, pervading the three worlds, supports them.
But the Highest Person is Other (than these two), called the Highest Self, the indestructible Lord who pervading the three worlds supports them.