Al-Jahiz held him to be the most learned scholar in all branches of human knowledge, and Ibn Hisham accepted his interpretation even of passages in the Qur'an.
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Almost half of all information about Arabia before Islam reported by later authors was by way of Abu Ubaida, and he wrote the earliest extant Tafsir or commentary on the Qur'an, which was the basis for explaining any verses in the prophetic biography written by Ibn Hisham.
The event is also mentioned by the Muslim scholars Ibn Hisham, Waqidi and Tabari.
This interpretation is supported by Arab historians and lexicographers, like Ibn Hisham, Ibn Manzur, and the corpus of Qur'anic exegesis.
Al Seerah of Ibn Hisham narrates he killed 20 people; Abdul Malik Ibn Husham, Al Seerah Al Nabaweyah (Biography of the Prophet), Published by Mustafa Al Babi Al Halabi, Egypt, 1955 A.D, Part 2 page.
Ibn Khaldun | Ibn Battuta | Husayn ibn Ali | Hasan ibn Ali | Ibn Hisham | Jābir ibn Hayyān | Ibn Ezra | Hisham Kabbani | Abraham ibn Ezra | Tariq ibn Ziyad | Ibn Battuta Mall | Ibn Arabi | Hisham Talaat Moustafa | Solomon ibn Gabirol | Ibn Saud | Ibn Hawqal | Ibn Ezra (disambiguation) | Abu Sufyan ibn Harb | Yusuf ibn Tashfin | Qazan Khan ibn Yasaur | Muhammad ibn Jarir al-Tabari | Imam Muhammad ibn Saud Islamic University | Ibn Khordadbeh | Ibn Abi Zar | Hisham ibn Abd al-Malik | Amrus ibn Yusuf | Akhnas ibn Shariq | Abu'l-Fazl ibn Mubarak | Abd al-Aziz ibn Musa | Zayyan ibn Mardanish |
Sources used are Ibn Ishaq (references here are to Ferdinand Wüstenfeld’s edition of Sirat Rasul Allah, a life of the Prophet by Muhammad ibn Ishaq in the annotated recension of Ibn Hisham).