Natyashastra
यममित्रौ च सम्पूज्यावपूपैर्मोदकैस्तथा । पितॄन्पिशाचानुरगान् सर्पिःक्षीरेण तर्पयेत् ॥ ३९॥
One should worship Yama and Mitra with cakes and sweetmeats. One should propitiate the manes, ghosts and serpents with ghee and milk.
english translation
yamamitrau ca sampUjyAvapUpairmodakaistathA । pitRRnpizAcAnuragAn sarpiHkSIreNa tarpayet ॥ 39॥
hk transliteration by Sanscript