Al-Mu'jam Al-Awasat by Imam Sulaiman bin Ahmad Al-Tabarani consists of hadiths with the chain of transmission. Also, Imam Al- Tabarani has passed comments which are regarded as "Elal al-Hadith" that when a narrator individually narrated the hadith from his teacher so, it is considered weak in the chain of transmission of hadith. Likewise a unique narration of an unreliable narrator is rejected among the scholars of hadith. It is called in hadith sciences ‘the appendage’ (Mutaba'a). A critical study of five hundred hadiths of the book of Al- Tabarani shows that many comments of Al- Tabarani are self-contradictory and hence dismissed. Several hadith's scholars criticized some of Al- Tabarani's comments like Ibne Hajar Al-Asqalani in his book (تغليق التعليق) and Abu Ishaq Al-Huwaini in his book (تنبيه الهاجد إلى ما وقع من النظر في كتب الأماجد). This article shows the significance of different kinds of appendages.