It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever sees a slip (shortcoming) in his brother's religion and covers it up for him, this deed will become a good deed for him on the Day of Resurrection."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith was narrated from Abu al-Malih al-Madani, from Abu Salih al-Khuzi, only by Ibn Nafi' and Marwan bin Mu'awiyah."
Hadith Referenceالمعجم الأوسط / باب الميم / 7926
Hadith Gradingمحدثین:إسناده ضعيف لضعف أبي صالح الخوزي
Hadith Takhrij«قال الهيثمي: وفيه أبو صالح الخوزي وهو ضعيف «مجمع الزوائد ومنبع الفوائد، ج 6، ص 247»»