The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 212

p. 212

तस्यात्मपरदेहेषु सतोऽप्येकमयं हि तत् ॥

In plain words

It is there in your own body and in the bodies of everyone else — and still that is one all the way through, one and nothing but one.

Close to the Sanskrit

Of that, though existing in one's own and others' bodies, that is indeed made wholly of one.