Hadith 8:174
Abu Bakr narrated to us, he said: Ibn ‘Uyaynah narrated to us, from Ibn Tawus, from his father, from Ibn ‘Abbas, who said: "Circumambulation (Tawaf) of the House is prayer, so reduce speech during it."
حدثنا أبو بكر قال ثنا بن عيينة عن بن طاوس عن أبيه عن بن عباس قال الطواف بالبيت صلاة فأقلوا الكلام فيه