Sayyiduna Abu Sa'id Khudri, may Allah be pleased with him, used to say that I heard four things from the Prophet Muhammad, peace and blessings be upon him, and these things are extremely beloved to me: That no woman should travel for two days except with her husband or a mahram relative with whom marriage is permanently unlawful, and that no one should prepare a mount (for travel) except for three mosques: Al-Masjid Al-Haram, my (Masjid Nabawi), and Al-Masjid Al-Aqsa.