Bhagavad Gita 9.6
यथाकाशस्थितो नित्यं वायुः सर्वत्रगो महान्। तथा सर्वाणि भूतानि मत्स्थानीत्युपधारय।।9.6।।
yathākāśasthito nityaṃ vāyuḥ sarvatrago mahān| tathā sarvāṇi bhūtāni matsthānītyupadhāraya||9.6||
yathakashasthito nityam vayuh sarvatrago mahan tatha sarvani bhutani matsthanityupadharaya9.6
Meaning
As the mighty wind, moving everywhere, always rests in space, so all beings rest in Krishna. The relationship between beings and the Supreme is like wind within space — pervaded yet not contained.
जैसे सर्वत्र विचरण करने वाली महान् वायु सदा आकाश में स्थित रहती हैं, वैसे ही सम्पूर्ण भूत मुझमें स्थित हैं, ऐसा तुम जानो।
This is verse 6 of 34 in Chapter 9 (Raja Vidya Raja Guhya Yoga) of the Bhagavad Gita.