SB 10.36.26

ārabhyatāṁ dhanur-yāgaś
 caturdaśyāṁ yathā-vidhi
viśasantu paśūn medhyān
 bhūta-rājāya mīḍhuṣe
Word for word: 
ārabhyatām — should be commenced; dhanuḥ-yāgaḥ — the bow sacrifice; caturdaśyām — on the fourteenth day of the month; yathā-vidhi — in accordance with Vedic injunctions; viśasantu — offer in sacrifice; paśūn — animals; medhyān — which are fit to be offered; bhūta-rājāya — to Lord Śiva, the lord of ghostly spirits; mīḍhuṣe — the giver of benedictions.
Translation: 
Commence the bow sacrifice on the Caturdaśī day in accordance with the relevant Vedic injunctions. In ritual slaughter offer the appropriate kinds of animals to the magnanimous Lord Śiva.