Skandapurana 5.184.129_92

5.184.129_92

tataḥprabhṛti saṃjātā pūjā cātithisaṃbhavā ..
tasmātsarvaprayatnena pūjā kāryā'titheḥ sadā ..
yajñe pūruṣayajñasya na caikasya kathaṃcana .. 121 .. ..

From that time forth, the worship of the guest was established. / Therefore, with all effort, worship of the guest must always be performed / at the sacrifice of the Supreme Person, and never for oneself alone. // 121