Gautamiya-tantra
Srimad-Bhagavatam
SB Canto 5
The Supreme Lord can be pleased only by devotional service: therefore it is said here that the Lord is surely satisfied by devotion and nothing else. Quoting from the Gautamīya-tantra, the Hari-bhakti-vilāsa states:
- tulasī-dala-mātreṇa
- jalasya culukena vā
- vikrīṇīte svam ātmānaṁ
- bhaktebhyo bhakta-vatsalaḥ
"Śrī Kṛṣṇa, who is very affectionate toward His devotees, sells Himself to a devotee who offers merely a tulasī leaf and a palmful of water." The Supreme Lord is causelessly merciful upon His devotee, so much so that even the poorest of men can offer Him a little water and a flower in devotion and thus please Him. This is due to His affectionate dealings with His devotees.
SB Canto 7
In the process of worshiping the Deity it is sometimes enjoined that one worship the Deity within the mind. In the Padma Purāṇa, Uttara-khaṇḍa, it is said, "All persons can generally worship within the mind." The Gautamīya Tantra states, "For a sannyāsī who has no home, worship of the Deity within the mind is recommended." In the Nārada-pañcarātra it is stated by Lord Nārāyaṇa that worship of the Deity within the mind is called mānasa-pūjā, One can become free from the four miseries by this method. Sometimes worship from the mind can be independently executed.