the Prophet said: "Tawaf around the House is similar to Salat except that you talk during it. So whoever talks in it, then let him not say but good." (Using translation from Tirmidhī 960)
عَنِ ابْنِ عَبَّاسٍ يَرْفَعْهُ إِلَى النَّبِيِّ ﷺ قَالَ «إِنَّ الطَّوَافَ بِالْبَيْتِ مِثْلُ الصَّلَاةِ إِلَّا أَنَّكُمْ تَتَكَلَّمُونَ فَمَنْ تَكَلَّمَ فَلَا يَتَكَلَّمُ إِلَّا بِخَيْرٍ»