Anwār al-Tanzīl wa-Asrār al-Ta’wīl (Arabic: أنوار التنزيل وأسرار التأويل, lit.

'The Lights of Revelation and the Secrets of Interpretation'), better known as Tafsīr al-Bayḍāwī (Arabic: تفسير البيضاوي), is one of the most popular classical Sunni Qur'anic interpretational works (tafsīr) composed by the 13th-century Muslim scholar al-Bayḍāwī (d.1319), flourished especially among non-Arab Muslim regions.

It served as an important source for 'Abd al-Ra'uf al-Singkili's Malay commentary upon the whole Qur'an, Tarjuman Almustafid ("The interpreter of that which gives benefit"), written around 1085/1675.

It has served as a core text in Muslim seminaries in Pakistan's Northwest Frontier Province, Malaysia, Indonesia and other places, providing an introduction to Qur'anic exegesis.

He wrote a number of other scholarly works in tenets of faith, jurisprudence, and Arabic, as well as history in Persian.

[8] The AlKoran, an early English translation made use of the convenience afforded by Al-Baydawi's work as the continuous commentary reproduced the Quran in its entirety.

[9] Al-Baydawi has attracted some criticism for the brevity of his writings, and for some inaccuracy, with some scholars accusing him of allowing some Mu'tazilite views held by al-Zamakhshari to filter through into Anwar al-Tanzil.

Haddad spent nine years of study in Damascus, Syria (1997-2006) and has received ijaza (scholarly licenses) from over 150 shaykhs and has authored dozens of books and hundreds of articles in Islamic hermeneutics, doctrine, hadith, biography and heresiology.