the oppressed—men, women, and children—who have no means and can find no way out. (98) For such people it may be that Allah will pardon them; and Allah is ever Pardoning, All-Forgiving.” (al-Nisāʾ 97–98).

2 – Supporting and assisting Muslims—with one’s life, wealth, and words—in whatever they need for their religion and for their worldly affairs.
Allah the Exalted says, “The believing men and believing women are allies of one another” (al-Tawbah 9:71).
He also says, “If they ask you for help in matters of religion, then it is your duty to help them—except against a people between whom and you there is a treaty” (al-Anfāl 8:72).

3 – Feeling pain for their pain and rejoicing at their joy.
The Prophet ﷺ said, “The likeness of the believers in their mutual affection, mercy, and compassion is that of a body: when one limb complains…”