Activities dedicated to the Supreme Personality of Godhead, even if performed in small measure, never go in vain. The Supreme Personality of Godhead, being the supreme father, is naturally very dear and always ready to act for the good of the living entities.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नावमः कर्मकल्पोऽपि विफलायेश्वरार्पितः । कल्पते पुरुषस्यैष स ह्यात्मा दयितो हितः
nāvamaḥ karmakalpo'pi viphalāyeśvarārpitaḥ | kalpate puruṣasyaiṣa sa hyātmā dayito hitaḥ
SB 8.5.48