On the authority of Abu Sa'id, who said: The Messenger of Allah, peace and blessings be upon him, said: "It is not lawful for a woman who believes in Allah and the Last Day to undertake a journey of more than three days unless she has with her her father, or her brother, or her husband, or her son, or a male relative within the prohibited degrees (dhū maḥram)." (1)

1727 — Aḥmad ibn Ḥanbal narrated to us, Yaḥyā ibn Sa'īd narrated to us, on the authority of ʿUbayd Allāh, Ḥaddathanī Nāfiʿ, on the authority of Ibn ʿUmar, on the authority of the Prophet, peace and blessings be upon him, who said: "A woman must not travel for three days unless she has with her a male relative within the prohibited degrees (dhū maḥram)." (2)

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(1) Its chain of transmission is authentic. Hunnād: he is Ibn al-Sarī, and Abū Muʿāwiyah: he is Muḥammad ibn Khāzim, and Wakīʿ: he is Ibn al-Jarrāḥ, and al-Aʿmash: he is Sulaymān ibn Mihrān, and Abū Ṣāliḥ: he is Dhakwān al-Sammān al-Zayyāt.
Muslim (1340) and al-Tirmidhī (1203) also narrated it via the route of Abū Muʿāwiyah, with this chain of transmission.
Muslim (1340) and Ibn Mājah (2898) also narrated it via the route of Wakīʿ, with it.
Al-Bukhārī (1197), (1864), and (1996), and Muslim following hadith (1338) also narrated it via the route of Qazaʿah ibn Yaḥyā, on the authority of Abū Sa'īd, with the wording: "A woman must not travel a distance of two days unless she has with her her husband or a male relative within the prohibited degrees." Some narrations of Muslim are like the narrator's version.
It is in the Musnad of Aḥmad (11515) and the Ṣaḥīḥ of Ibn Ḥibbān (2719).

(2) Its chain of transmission is authentic. Yaḥyā ibn Sa'īd: he is al-Qaṭṭān, and ʿUbayd Allāh: he is Ibn ʿUmar ibn Ḥafṣ al-ʿAdawī, and Nāfiʿ: he is the freed slave of Ibn ʿUmar.
Al-Bukhārī (1087) and Muslim (1338) (413) also narrated it via multiple routes from Yaḥyā ibn Sa'īd, with this chain of transmission.
Al-Bukhārī (1086) and Muslim (1338) (413) also narrated it via two routes from ʿUbayd Allāh, with it.
Muslim (1338) (414) also narrated it via the route of al-Ḍaḥḥāk ibn ʿUthmān, from Nāfiʿ, with it.
He said in his narration: "A journey of three nights."
It is in the Musnad of Aḥmad (4615) and the Ṣaḥīḥ of Ibn Ḥibbān (2729).