पुरुषं सोम्योतोपतापिनं ज्ञातयः पर्युपासते जानासि मां जानासि मामिति तस्य यावन्न वाङ्मनसि सम्पद्यते मनः प्राणे प्राणस्तेजसि तेजः परस्यां देवतायां तावज्जानाति ॥ ६.१५.१ ॥
In plain words
"When a man is sick, my dear, his kinsmen sit about him asking, 'Dost thou know me? Dost thou know me?' So long as his speech has not been gathered into the mind, the mind into the breath, the breath into heat, and heat into the highest deity, so long does he know.