ṛtūnāṁ kusumākaraḥ

brhat-sama-the Brhat-sama; tatha-also; samnam-of the Sama-veda song; gayatri-the Gayatri hymns; chandasam-of all poetry; aham-I am; masanam-of months; marga-sirso 'ham-the month of November-December; aham-I am; rtunam-of all seasons; kusumakarah-spring.