Brahma Sutras

siva.sh/brahma-sutras/3/4/27

ॐ शमदमाद्युपेतः स्यात्तथाऽपि तु तद्विधेस्तदङ्गतया तेषामवश्यानुष्ठेयत्वात् ॐ ॥ ३.४.२७॥

sanskrit

(Even though there be no injunction about sacrifices etc.,), still one must be endowed with self-control and the like, since these are enjoined as subsidiaries of knowledge; and hence have to be practised as a matter of course.

english translation

OM zamadamAdyupetaH syAttathA'pi tu tadvidhestadaGgatayA teSAmavazyAnuSTheyatvAt OM || 3.4.27||

hk transliteration by Sanscript