Srimad-Bhagavatam: Canto 1 - Chapter 1 - Verse 9

Sanskrit:

एकदा निर्गतां गेहाद्दुहन्तीं निशि गां पथि ।सर्पोऽदशत्पदा स्पृष्ट: कृपणां कालचोदित: ॥ ९ ॥

ITRANS:

ekadā nirgatāṁ gehādduhantīṁ niśi gāṁ pathisarpo ’daśat padā spṛṣṭaḥkṛpaṇāṁ kāla-coditaḥ

Translation:

Once upon a time, my poor mother, when going out one night to milk a cow, was bitten on the leg by a serpent, influenced by supreme time.

Purport:

That is the way of dragging a sincere soul nearer to God. The poor boy was being looked after only by his affectionate mother, and yet the mother was taken from the world by the supreme will in order to put him completely at the mercy of the Lord.