One verse

Srimad Bhagavatam 10.70.6

10.70.6

अथाप्लुतोऽम्भस्यमले यथाविधि क्रियाकलापं परिधाय वाससी । चकार सन्ध्योपगमादि सत्तमो हुतानलो ब्रह्म जजाप वाग्यत: ॥ ६ ॥

athāpluto ’mbhasy amale yathā-vidhi kriyā-kalāpaṁ paridhāya vāsasī cakāra sandhyopagamādi sattamo hutānalo brahma jajāpa vāg-yataḥ

atha
then
āplutaḥ
having bathed
ambhasi
in water
amale
pure
yathā-vidhi
according to Vedic rules
kriyā
of rituals
kalāpam
the entire sequence
paridhāya
after dressing
vāsasī
in lower and upper garments
cakāra
He executed
sandhyā-upagama
worship at dawn
ādi
and so on
sat-tamaḥ
the most saintly of personalities
huta
having offered oblations
analaḥ
to the sacred fire
brahma
the mantra of the Vedas (namely Gāyatrī)
jajāpa
He chanted quietly
vāk
speech
yataḥ
controlling

That most saintly of personalities would then bathe in sanctified water, dress Himself in lower and upper garments and perform the entire sequence of prescribed rituals, beginning with worship at dawn. After offering oblations into the sacred fire, Lord Kṛṣṇa would silently chant the Gāyatrī mantra.