Shiva Purana
आदित्यादीन्ग्रहानिष्ट्वा सर्वहोमांत एव हि । ऋत्विभ्यो दक्षिणां दद्यान्नवरत्नं यथाक्रमम् 1-18-१२० ।
The entire rite shall conclude after the worship of nine planets. A gem along with monetary gifts shall be given to each of the Ṛtviks.
english translation
AdityAdIngrahAniSTvA sarvahomAMta eva hi । Rtvibhyo dakSiNAM dadyAnnavaratnaM yathAkramam 1-18-120 ।
hk transliteration by Sanscript