Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates this statement of the Prophet (peace and blessings be upon him): "A servant's faith is not upright until his heart is upright, and his heart is not upright until his tongue is upright, and a man will not enter Paradise until his neighbour is safe from his harm."
Ahmad recorded it. Its chain contains a narrator, Ali bin Mas'adah, whom a group declared thiqah (trustworthy) and others declared da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الإيمان / 165
Hadith Gradingمحدثین:إسناده حسن
Hadith Takhrij«اخرجه الامام احمد فى مسنده 198/3 اورده المؤلف فى زوائد المسند 77 ، أخرجه مسند أحمد برقم: 12636»