vibhūtiyoga - Verse śloka 35
śloka 35
bṛhatsāma tathā sāmnāṃ gāyatrī chandasāmaham |
māsānāṃ mārgaśīrṣo'hamṛtūnāṃ kusumākaraḥ ||10-35||
Translation
Among the Samas (chanted mantras) I am the Brihatsama, and among metres I am the Gayatri metre; among months I am Margashirsha (the period of December-January) and among seasons I am spring.