Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 62
Sanskrit:
अस्मास्वप्रतिकल्पेयं यत् कृताज्ञेषु सत्तमै: ।मैत्र्यर्पिताफला चापि न निवर्तेत कर्हिचित् ॥ ६२ ॥
ITRANS:
asmāsv apratikalpeyaṁyat kṛtājñeṣu sattamaiḥmaitry arpitāphalā cāpina nivarteta karhicit
Translation:
Indeed, the Supreme Lord must have created the bonds of affection, for such exalted saints as you have never stopped showing matchless friendship toward us ingrates, although it has never been properly reciprocated.