Srimad-Bhagavatam: Canto 4 - Chapter 1 - Verse 33

Sanskrit:

तथा स्वभागधेयानि ग्रहीष्यन्ति दिवौकस: ।यद्यज्ञपुरुष: साक्षादपत्याय हरिर्वृत: ॥ ३३ ॥

ITRANS:

tathā sva-bhāgadheyānigrahīṣyanti divaukasaḥyad yajña-puruṣaḥ sākṣādapatyāya harir vṛtaḥ

Translation:

When Hari, the supreme enjoyer of all sacrifices, is invited to fulfill your desire for a son, all the demigods will come with Him and take their shares in the sacrifice.

Purport:

Whenever a sacrifice is performed, it is meant for satisfying Lord Viṣṇu, the enjoyer of the fruits of all sacrifices; and when Lord Viṣṇu agrees to come to a sacrificial arena, all the demigods naturally follow their master, and their shares are offered in such sacrifices. The conclusion is that the sacrifices performed are meant for Lord Viṣṇu, not for the demigods.