Paraskaragrihyasutra 3.2.6

3.2.6

paścādagneḥ srastaramāstīryāhataṃ ca vāsa āplutā ahatavāsasaḥ pratyavarohanti dakṣiṇataḥ svāmī jāyottarā yathākaniṣṭhamuttarataḥ \6\

After they have spread out to the west of the fire a layer (of straw) and a garment that has not yet been washed, they 'redescend,' having bathed, wearing garments which have not yet been washed: the master (of the house) southward, his wife to the north (of her husband, and then the other persons belonging to the house) so that each younger one lies more to the north.