From Sahih Bukhari (Hadith 4853):
Narrated Um Salama:I complained to Allah's Messenger (ﷺ) that I was sick, so he said, "Perform the Tawaf (of Ka`ba at Mecca) while riding behind the people (who are performing the Tawaf on foot)." So I performed the Tawaf while Allah's Messenger (ﷺ) was offering the prayer by the side of the Ka`ba and was reciting: 'By the Mount (Sinai) and by a Decree Inscribed
Reference: Bukhari 4853