The hiṅkâra is mind, the prastâva speech, the udgîtha sight, the pratihâra hearing, the nidhana breath. That is the Gâyatra Sâman, as interwoven in the (five) prânas .
He who thus knows this Gâyatra interwoven in the prânas, keeps his senses, reaches the full life, he lives long , becomes great with children and cattle, great by fame. The rule of him who thus meditates on the Gâyatra is, 'Be not high-minded.'