"Speak little when you are perfoming Tawaf for you are in a state of Salah". (Sahih Mawquf)
Sunan an-Nasa'i Book 24, Hadith 306
← Previous Hadith "Tawaf of the House is a form of Salah, so speak little." (Sahih Mawquf) This is the wording of Yu8saf, which was contradicted by Hanzalah bin Abi sufyan:

Sunan an-Nasa'i Book 24, Hadith 305 Next Hadith → "O Banu Abd Manaf, do not prevent anyone from circumambulating this House of praying at any time of the night or day he wishes."

Sunan an-Nasa'i Book 24, Hadith 307