Shiva Purana
नैरृते तु यजेत्खड्गं पाशं वारुणगोचरे ॥ अंकुशं मारुते भागे पिनाकं चोत्तरे यजेत् ॥ ६७ ॥
On the north side one should worship a sword and a rope in the presence of Varuṇa. One should worship Ankusha in the wind and Pinaka in the north.
english translation
nairRte tu yajetkhaDgaM pAzaM vAruNagocare ॥ aMkuzaM mArute bhAge pinAkaM cottare yajet ॥ 67 ॥
hk transliteration by Sanscript