Rigvedabrahmana 17.2

17.2

athāta ūrdhvāni cchandāṃsi viharati prāṇā vai cchandāṃsi prāṇāneva tadātmanvyatiṣajatyavivarhāya tasmāddīme prāṇā viṣvañco vānto
na nirvāntya1tho ānuṣṭubho vai ṣoḍaśī sarvāṇyevaitacchandāṃsyanuṣṭubhamabhisaṃpādayati gāyatrīśca paṅktīśca viharati yajamānacchandasaṃ paṅktistejo brahmavarcasaṃ gāyatrī teja eva tadbrahmavarcasaṃ yajamāne dadhātyuṣṇihaśca bṛhatīśca
viharati yajamānacchandasamevauṣṇikapaśavo bṛhatī bā2rhatāneva tatpaśūnyajamāne dadhāti dvipadāṃ ca viṃśatyakṣarāṃ triṣṭubhaṃ ca viharati yajamānacchandasaṃ dvipadā balaṃ vai vīryaṃ triṣṭubbalameva tadvīryaṃ yajamāne dadhāti dvipadāśca ṣoḍaśākṣarā jagatīśca viharati yajamānacchandasameva
dvipadāḥ paśavo jagatī jā3gatāneva tatpaśūnyajamāne dadhāti gāyatrīḥ
śaṃsati prāṇo vai gāyatryaḥ prāṇameva tadātmandhatte saptapadāṃ śaṃsati sapta
vai cchandāṃsi sarveṣāmeva cchandasāmāptyā atho etayā saha gāyatryaścatasro
'nuṣṭubhaḥ saṃpadyante tasmādetāṃ śaṃsati saṃpade