Silsilah as-Sahihah 3065 — Whose Duas Are Accepted?

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings of Allah be upon him) said: "The supplications of three persons are not rejected: the one who remembers Allah abundantly (his supplication), the supplication of the oppressed, and the supplication of a just ruler."