Bhagavad Gita Chapter 18 Verse 61
भगवद् गीता अध्याय 18 श्लोक 61

ईश्वरः सर्वभूतानां हृद्देशेऽर्जुन तिष्ठति।
भ्रामयन्सर्वभूतानि यन्त्रारूढानि मायया।।18.61।।



हिंदी अनुवाद - स्वामी तेजोमयानंद
।।18.61।। हे अर्जुन (मानों किसी) यन्त्र पर आरूढ़ समस्त भूतों को ईश्वर अपनी माया से घुमाता हुआ (भ्रामयन्) भूतमात्र के हृदय में स्थित रहता है।।


Kumara Vaishnava Sampradaya - Commentary
Isvarah is the all pervading Supreme Lord as the indwelling  monitor  within
hrid dese the core of the heart which is the source  of  all  consciousness,
the basis of all actions pravritti or passive  and  nivritti  or  energetic.
The Supreme Lord abides simultaneously in the etheric heart  of  every  jiva
or embodied being in a subatomic form known as paramatma the  Supreme  Soul.
Once so installed the Supreme Lord activates,  energises  and  animates  the
physical body of the jiva or embodied  being.  Maya  the  external  illusory
potency  bombasts  and  buffets  the  jivas  interminably  in  the  material
existence in accordance to and consistent with the guna or mode of  material
nature  which  is  predominate.  The   Brihadaranyaka   Upanisad   III.VI.XV
beginning yah sarvesu bhutesu tisthan states: The  Supreme  Lord  abides  in
all beings and controls all living entities  internally.