Srimad-Bhagavatam: Canto 7 - Chapter 1 - Verse 40
Sanskrit:
पथि च्युतं तिष्ठति दिष्टरक्षितंगृहे स्थितं तद्विहतं विनश्यति ।जीवत्यनाथोऽपि तदीक्षितो वनेगृहेऽभिगुप्तोऽस्य हतो न जीवति ॥ ४० ॥
ITRANS:
pathi cyutaṁ tiṣṭhati diṣṭa-rakṣitaṁgṛhe sthitaṁ tad-vihataṁ vinaśyatijīvaty anātho ’pi tad-īkṣito vanegṛhe ’bhigupto ’sya hato na jīvati
Translation:
Sometimes one loses his money on a public street, where everyone can see it, and yet his money is protected by destiny and not seen by others. Thus the man who lost it gets it back. On the other hand, if the Lord does not give protection, even money maintained very securely at home is lost. If the Supreme Lord gives one protection, even though one has no protector and is in the jungle, one remains alive, whereas a person well protected at home by relatives and others sometimes dies, no one being able to protect him.
Purport:
These are examples of the supremacy of the Lord. Our plans to protect or annihilate do not act, but whatever He thinks of doing actually happens. The examples given in this regard are practical. Everyone has had such practical experiences, and there are also many other clear examples. For instance, Prahlāda Mahārāja said that a child is certainly dependent on his father and mother, but in spite of their presence, the child is harassed in many ways. Sometimes, in spite of a supply of good medicine and an experienced physician, a patient does not survive. Therefore, since everything is dependent on the free will of the Supreme Personality of Godhead, our only duty is to surrender unto Him and seek His protection.