Brahma Sūtra 3.4.32
Śaṅkara
Advaita Vedānta
Sūtra
विहितत्वाच्चाऽऽश्रमकर्मापि
vihitatvāccā''śramakarmāpi
Sūtra translation
The works of the A.yramas (are incumbent on him) also (who does not desire release) ; because they are enjoined.
Under Sutra 26 it has been proved that the works enjoined on the ^i-ramas are means of knowledge. Now we will consider whether those
Rāmānuja
Viśiṣṭādvaita Vedānta
Sūtra
विहितत्वाच्चाश्रमकर्मापि
vihitatvāccāśramakarmāpi
Sūtra translation
The works of the âsramas also, on account of their being enjoined.
It has been said that sacrifices and other works are auxiliary to the knowledge of Brahman. The doubt now arises whether those works are
Madhva
Dvaita Vedānta
Sūtra
विहितत्वाच्चाश्रमकर्मापि
vihitatvāccāśramakarmāpi
Sūtra translation
And because the dailies of Asrama also are enjoined upon him.
Simply refraining from what is prohibited does not suffice. The duty enjoined upon him according to his Varna and Asrama should also be performed.