अद्वैत प्रकरण -मंदुक्य उपनिषद्

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घठादिशु प्रलीनेशु घठाका शादयो यथा
आकाशे सम्प्रलीयन्ते तद्वज जीवा इहात्मनी


As the space takes the shape of the boundaries drawn to it(like the shape of the space within the earthen pot)and it sublimes into the expanse once the pot is broken, so is the Atman(ones self)sublimes into the super self ones the body looses its potential to hold the self.