Vyasasmriti 2.27

2.27

chāyevānugatā svacchā sakhīva hitakarmasu
dāsīvādiṣṭakāryeṣu bhāryā bharttuḥ sadā bhavet

following him like a shadow, pure, like a friend in helpful deeds, / and like a maidservant in assigned tasks, a wife should always be devoted to her husband.