Sayyiduna Usamah al-Hudhali (may Allah be pleased with him) narrates this saying of the Prophet (peace and blessings be upon him): "When a nation consisting of forty or more people bears witness to something, Allah Almighty accepts their testimony."
Tabarani recorded it in al-Mu'jam al-Awsat and al-Mu'jam al-Kabir, and in it he stated: (the narrator is unsure, or perhaps the wording is:) "Allah Almighty confirms their testimony." Its chain contains a narrator, Salih bin Hilal, who is majhul (unknown) according to the principle of Ibn Abi Hatim.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 689
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه الامام الطبراني فى معجم الاوسط 2704 ، أخرجه المعجم الكبير للطبراني برقم: 502، وأخرجه المعجم الأوسط للطبراني برقم: 2725»