وَ صَدَّقَ بِالْحُسْنٰی ۙ﴿۶﴾

And believed the best matter to be true

Tafsir al-Jalalain                                                                                                                        تفسیر الجلالین                                                

{وَصَدَّقَ بِالْحُسْنَى} أَيْ بِلَا إِلَه إِلَّا اللَّه

And affirms the truth of the best word, i.e. [the truth] of ‘there is none worthy of worship but Allah.

Tafsir al-Jalalain of Imam Jalaaluddin Muhammad ibn Ahmad al-Mahalli al-Shafe’i t D. 864 A.H. and Imam Jalaaluddin Abd al-Rahman ibn Abi Bakr al-Suyooti al-Shafe’i t D. 911 A.H.