Brahma Sutras
ॐ विहितत्वाच्चाश्रमकर्मापि ॐ ॥ ३-४-३२॥
At the same time the duties of the orders of life are to be performed (by one who does not want liberation), since these have been enjoined.
english translation
OM vihitatvAccAzramakarmApi OM ॥ 3-4-32॥
hk transliteration by Sanscript