Śrāddha-kalpa: Dāna-phala-nirdeśa
Gifts in Śrāddha and Their Fruits
गावस्तमुपतिष्ठन्ति नरं पुष्टिस्तथैव च / दद्याद्यः शिशिरे चाग्निं बहुकाष्ठं प्रयत्नतः
gāvastamupatiṣṭhanti naraṃ puṣṭistathaiva ca / dadyādyaḥ śiśire cāgniṃ bahukāṣṭhaṃ prayatnataḥ
He who, in the cold season, diligently gives the gift of fire with abundant firewood—cows attend upon that man, and nourishment and strength come to him.