One verse

Bhagavad Gita 17.14

17.14

देवद्विजगुरुप्राज्ञपूजनं शौचमार्जवम् | ब्रह्मचर्यमहिंसा च शारीरं तप उच्यते ||१७-१४||

devadvijaguruprājñapūjanaṃ śaucamārjavam . brahmacaryamahiṃsā ca śārīraṃ tapa ucyate ||17-14||

deva
of the Supreme Lord
dvija
the brāhmaṇas
guru
the spiritual master
prājña
and worshipable personalities
pūjanam
worship
śaucam
cleanliness
ārjavam
simplicity
brahmacaryam
celibacy
ahiṁsā
nonviolence
ca
also
śārīram
pertaining to the body
tapaḥ
austerity
ucyate
is said to be

Austerity of the body consists in worship of the Supreme Lord, the brāhmaṇas, the spiritual master, and superiors like the father and mother, and in cleanliness, simplicity, celibacy and nonviolence.