One verse

Srimad Bhagavatam 8.18.14

8.18.14

तस्योपनीयमानस्य सावित्रीं सविताब्रवीत् । बृहस्पतिर्ब्रह्मसूत्रं मेखलां कश्यपोऽददात् ॥ १४ ॥

tasyopaniyamanasya savitrim savitabravit brhaspatir brahma-sutram mekhalam kasyapo ’dadat

tasya
of Lord Vamanadeva
upaniyamanasya
at the time of His being offered the sacred thread ceremony
savitrim
the Gayatri mantra
savita
the sun-god
abravit
chanted
brhaspatih
Brhaspati, the guru of the demigods
brahma-sutram
the sacred thread
mekhalam
the belt of straw
kasyapah
Kasyapa Muni
adadat
offered.

At the sacred thread ceremony of Vamanadeva, the sun-god personally uttered the Gayatri mantra, Brhaspati offered the sacred thread, and Kasyapa Muni offered a straw belt.