(33) باب إِذَا حَلَفَتِ الْمَرْأَةُ لِتَمْشِي حَافِيَةً غَيْرَ مُخْتَمِرَةٍ
'Uqbah bin 'Amir narrated that he asked the Prophet about a sister of his who had vowed to walk, barefoot and bareheaded. The Prophet said to him:
"Tell her to cover her head and ride, and fast for three days." (DE)
Reference (DE): Sunan an-Nasa'i 3815 (DE)
In-book reference (DE): Book 35, Hadith 55 (DE)
English translation (DE): Vol. 4, Book 35, Hadith 3846 (DE)