Silsilah as-Sahihah 2153 — Prayers of parents, traveler, and oppressed

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: "There are three supplications that are accepted, there is no doubt about their acceptance: the supplication of the father, the supplication of the traveler, and the supplication of the oppressed."