Inna Lillahi wa inna ilayhi Raji un

Truly, to Allah we belong and truly, to Him we shall return.
[Noble Quran 2:156]


The translation of the verses mentioned before and after this ayah is:
And certainly, We shall test you with something of fear, hunger, loss of wealth, lives and fruits, but give glad tidings to As-Sabirin (the patient). [Noble Quran 2:155]

Who, when afflicted with calamity, say: "Truly, to Allah we belong and truly, to Him we shall return.'' [Noble Quran 2:156]

They are those on whom are the Salawat (i.e, who are blessed and will be forgiven) from their Lord, and (they are those who) receive His mercy, and it is they who are the guided ones.
[Noble Quran 2:157]

This ayah is to be said in cases where a person has suffered any kind of loss, be it the death of a person (Muslim or non-Muslim) or any living creature, loss of wealth or property, deterioration of health, etc.

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"Age wrinkles the body, but disobeying Allah wrinkles the soul."