Sunan an-Nasa'i 2923
سنن النسائي#2923Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ سُلَيْمَانَ، قَالَ أَنْبَأَنَا السِّينَانِيُّ، عَنْ حَنْظَلَةَ بْنِ أَبِي سُفْيَانَ، عَنْ طَاوُسٍ، قَالَ قَالَ عَبْدُ اللَّهِ بْنُ عُمَرَ أَقِلُّوا الْكَلاَمَ فِي الطَّوَافِ فَإِنَّمَا أَنْتُمْ فِي الصَّلاَةِ .
Abdullah bin Umar said:"Speak little when you are perfoming Tawaf for you are in a state of Salah". (Sahih Mawquf)
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahSahih Isnaad Mauquf
Al-AlbaniSahih Isnaad Mauquf
Zubair Ali ZaiSahih
In-book reference: 24:306