What is the religious ruling on one who, upon hearing of sudden deaths, becomes ascetically detached from worldly life, neither developing themselves nor striving to achieve their ambitions, and having no desire for marriage or work?

Remembering death is important for softening the heart and preparing for the encounter with Allah, and it comes suddenly. Frequent remembrance of it prompts the believer to prepare, to shorten their worldly hopes, and to improve their righteous deeds.

There are two types of fear of death: 1. Positive fear: This encourages righteous deeds and striving in obedience to Allah, such as a Muslim marrying with a good intention, or working to keep oneself chaste, provide for one's family, and benefit Muslims. This type fulfills the Legislator's intent behind remembering death. 2. Negative fear: This is a pathological fear that hinders a person from working, striving, and performing what is necessary or recommended. This type contradicts the guidance of the Prophet (peace be upon him) and his Companions.

Therefore, if a Muslim hears about sudden deaths, they should increase their activity and diligence in obeying Allah, rather than letting it deter them from work or marriage.