Paraskaragrihyasutra 3.4.17

3.4.17

athottarato 'svapnaśca mānavadrāṇaścottarato gopāyetāmiti candramā vā asvapno vāyuranavadrānastau prapadye tābhyāṃ namostu tau mottarato gopāyetāmiti \17\

Then to the north: 'May the sleepless one and the not-slumbering one protect me from the north.
'The Moon is the sleepless one; the Wind is the not-slumbering one; to them I apply; to them be adoration; may they protect me from the north.'