Jami at-Tirmidhi — The Book on Clothing — Hadith No: 1778
Translation
Narrated 'Abdur-Rahman bin Al-Qasim: From his father, about 'Aishah that: "She would walk in one sandal." This is more correct. [Abu 'Eisa said:] This is how it was reported by Sufyan Ath-Thawri and others, from 'Abdur-Rahman bin Al-Qasim, in Mawquf form, and this is more correct