Brahma Sutras
ॐ अनुज्ञापरिहारौ देहसम्बन्धाज्ज्योतिरादिवत् ॐ ॥ २-३-४८॥
Injunction and prohibition become effective owing to physical association, just as it is in the case of light etc.
english translation
OM anujJAparihArau dehasambandhAjjyotirAdivat OM ॥ 2-3-48॥
hk transliteration by Sanscript