Sunan Abi Dawud 4684
سنن أبي داود#4684Sahihحَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ، حَدَّثَنَا ابْنُ ثَوْرٍ، عَنْ مَعْمَرٍ، قَالَ وَقَالَ الزُّهْرِيُّ { قُلْ لَمْ تُؤْمِنُوا وَلَكِنْ قُولُوا أَسْلَمْنَا } قَالَ نَرَى أَنَّ الإِسْلاَمَ الْكَلِمَةُ وَالإِيمَانَ الْعَمَلُ .
Explaining the verse, “say ; You have no faith, but you only say :We have submitted our wills to Allah”, Al-Zuhri said : We think that ISLAM is a word, and faith is an action
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:
Al-AlbaniSahih Isnaad Maqtu
Muhammad Muhyi Al-Din Abdul HamidSahih Isnaad Maqtu
Shuaib Al ArnautMaqtu
Zubair Ali ZaiIsnaad Sahih
In-book reference: 42:89