Charak Samhita
काले पुनस्तर्पणाद्यं क्रमं कुर्यात् प्रकाङ्क्षिते । तेनाग्निर्दीप्यते तस्य दोषशेषान्नपाचकः ॥१४३॥
If yearning to drink again, tarpana shall be given in appropriate time, which leads digestion of remaining toxins by stimulating agni.
english translation
kAle punastarpaNAdyaM kramaM kuryAt prakAGkSite । tenAgnirdIpyate tasya doSazeSAnnapAcakaH ॥143॥
hk transliteration by Sanscript