18.20 सर्वभूतेषु in all beings, येन by which, एकम् one, भावम् reality, अव्ययम् indestructible, ईक्षते (one) sees, अविभक्तम् inseparable, विभक्तेषु in the separated, तत् that, ज्ञानम् knowledge, विद्धि know, सात्त्विकम् Sattvic (pure).Commentary: That knowledge that sees no difference in all objects that are perceived, is pure. The seer beholds the one allpervading imperishable substance or essence behind the seeming diversity of the objects. He beholds unity in diversity, one in many, all in one. He sees that all the diverse objects are rooted in the One.Bhavam Reality The One Self.Sarvabhuteshu In all beings From the Unmanifested down to the insentient and unmoving objects.Avyayam Indestructible inexhaustible unchangeable that which cannot be exhausted either in itself or in its properties immutable.Just as the ether is indivisible, so also the Self is indivisible. The Self is the same in all bodies. It is the common consciousness in all bodies. It is not different in different bodies. It is one homogeneous indivisible essence or substance in all bodies, in all beings. Know thou, O Arjuna, this direct and right perception of the nondual Self as Sattvic (pure). (Cf.IV.35VI.29XIII.16,28XVIII.30)