Sunan Ibn Majah 766
سنن ابن ماجه#766Hasanحَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ، أَنْبَأَنَا ابْنُ لَهِيعَةَ، ح وَحَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا حَاتِمُ بْنُ إِسْمَاعِيلَ، جَمِيعًا عَنِ ابْنِ عَجْلاَنَ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ نَهَى عَنْ إِنْشَادِ الضَّالَّةِ فِي الْمَسْجِدِ .
It was narrated from 'Amr bin Shu'aib from his father, from his grandfather that:The Messenger of Allah forbade making lost-and-found announcements in the mosque
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-AlbaniHasan
Muhammad Fouad Abd al-BaqiHasan
Shuaib Al ArnautHasan
Zubair Ali ZaiHasan
In-book reference: 4:32