Shiva Purana

siva.sh/siva-purana/vishweshwara-samhita/20/2

सूत्रोक्तविधिना स्नात्वा संध्यां कृत्वा यथाविधि । ब्रह्मयज्ञं विधायादौ ततस्तर्प्पणमाचरेत् २ ।

sanskrit

The devotee shall take bath in accordance with the rules prescribed in the sacred code. He shall duly perform his Sandhyā prayers. After performing the Brahma Yajña, one of the five daily sacrifices, he shall perform Tarpaṇa (a rite of offering water oblation to the manes).

english translation

sUtroktavidhinA snAtvA saMdhyAM kRtvA yathAvidhi | brahmayajJaM vidhAyAdau tatastarppaNamAcaret 2 |

hk transliteration by Sanscript