For those seeking a PDF version of the Sanskrit text, here are a few resources:
: While the primary link is in English, they offer a Sanskrit PDF version for download that contains the phonetic and Devanagari text for rituals like Pithru Varga Tharpanam .
Sanskrit: ॐ यम्याय नमः तर्पयामि। English: Om Yamyai Namah Tarpayami.