What is the explanation of the hadith: "The one who cares for a widow and a needy person is like the one who fasts all day and prays all night"? Does this compensate for shortcomings in fasting and prayer on the Day of Resurrection, and how can one benefit from this reward?

The noble Hadith: "The one who strives for the sake of the widow and the poor person is like the mujahid (fighter) in the way of Allah, or the one who fasts during the day and prays during the night" is authentic. It means that whoever takes care of a widow (a woman who has lost her husband) or a poor person (one who does not find enough for their needs) will receive a reward and recompense equal to that of a mujahid in the way of Allah, or one who fasts and prays. This reward pertains to recompense, not sufficiency; this act does not negate obligatory duties such as prayer or obligatory fasting. However, it elevates the status of its doer. Whoever is unable to perform jihad, fast, or pray (at night), can strive for the sake of widows and the poor to attain the rank of the mujahidin, fasters, and those who pray (at night).