In his Qur'anic Studies, John Wansbrough tried to show for the first time that the so-called Tafsīr Ibn 'Abbās or Tanwīr al-Miqbās min Tafsīr Ibn 'Abbās did not go back to the original interpretations of Ibn Abbās; nor has it been compiled by al-Fīrūzabadī (d. 817 A.H.). Dating the text around the end of 2nd century, he considered it as Tafsīr of al-Kalbī (d. 146 A.H.). Nearly two decade later, his pupil Andrew Rippin through analyzing its available manuscripts, concluded that this work was nothing but Tafsīr al-Wādih written by Diniwari at the end of the third, or early forth century. However, he also confesses for some relations between al- Wādih and Tafsīr of al-Kalbī.The present article firstly seeks to estimate Rippin's method in dating the Tafsīr and his identifying its author by ignoring the isnāds and simply relying on literary element of the text. Secondly the author shows that contrary to Rippin, the real compiler of al- Wadih or Tafsīr Ibn 'Abbās is not 'Abdullāh ibn Muhammad ibn Wahb al- Dīniwarī (d. 308 A.H.), but 'Abdullah ibn al-Mubarak al-Dīniwarī However, he accepts Rippin's dating of the text itself and ascribing it to around late third Islamic century