गोविन्द भाष्य (श्रील बलदेव विद्याभूषण - अचिन्त्यभेदाभेद वेदान्त ब्रह्मसूत्र भाष्य सटीक)

tulasī-dala-mātreṇa
jalasya culukena ca
vikrīṇīte svam ātmānaṁ
bhaktebhyo bhakta-vatsalaḥ
"The Supreme Personality of Godhead, who dearly loves His devotees, sells
Himself to them in exchange for a tulasī leaf and palmful of water."
The ṛtvik priests are purchased for a certain task by the yajamāna's payment of
dakṣiṇā. Being an impersonalist, Auḍulomi equates devotional service with buying
and selling. For these reasons the nirapekṣas are the best of the devotees.
Sūtra 46
śruteś ca
śruteḥ—from the Śruti-śāstra; ca—also.
From the Śruti-śāstra also.
Purport by Śrīla Baladeva Vidyābhūṣaṇa
In the performance of yajña the ṛtvik priest gives his blessing to the performer
of the yajña (yajamāna). In the Chāndogya Upaniṣad (1.7.8-9) it is also said:
tasmād u haivam-vid udgātā brūyāt kaṁ te kāmam āgāyāni
"Then the learned udgātā priest says: Of what desire shall I sing?"
In this way the ṛtvik priest gives the result of the yajña to the yajamāna. As the
ṛtvik priest thus maintains the yajamāna, so the Supreme Personality of Godhead
maintains His devotee.
Adhikaraṇa 12