Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrated that the Noble Prophet (peace and blessings of Allah be upon him) said: "A woman should not undertake a journey of three days without a mahram (a close male relative)."
Hadith Referenceاللؤلؤ والمرجان / كتاب الحج / 847
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 18 كتاب تقصير الصلاة: 4 باب في كم يقْصر الصلاة»