O Brahmā, the prayers that you have chanted praising the glories of My transcendental activities, the penances you have undertaken to understand Me, and your firm faith in Me — all these are to be considered My causeless mercy.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यच्चकर्थाङ्ग मत्स्तोत्रं मत्कथाभ्युदयाङ्कितम् । यद्वा तपसि ते निष्ठा स एष मदनुग्रहः
yaccakarthāṅga matstotraṃ matkathābhyudayāṅkitam | yadvā tapasi te niṣṭhā sa eṣa madanugrahaḥ
SB 3.9.38