Sunan At-Tirmidhi
Hadith #1778
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