الَّذِیۡ یَصْلَی النَّارَ الْکُبْرٰی ﴿ۚ۱۲﴾

The one who will enter the biggest fire.

Tafsir al-Jalalain                                                                                                                        تفسیر الجلالین                                                

{الَّذِي يَصْلَى النَّار الْكُبْرَى} هِيَ نَار الْآخِرَة وَالصُّغْرَى نَار الدُّنْيَا

He who will be roasted in the greatest Fire, the Fire of the Hereafter, the lesser fire being that of this world.

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.

Tafsir Rooh al-Bayaan                                                                                              تفسیر روح البیان                                                

اى يدخل الطبقة السفلى من طبقات النار. وآتش آن از آتش دركات ديگر تيزتر وسوزنده تر است وآن جاى آل فرعون ومنافقان ومنكران مائده عيسى عليه السلام باشد ونار صغرى در طبقه عليا كه چاى گنهگاران امت محمد مصطفاست عليه السلام.

i.e. he will go in the lowest level of hellfire.  The fire of this level is the greatest of all the other levels of hell.  It is the eternal abode of Pharaoh’s people, hypocrites and the ones who rejected the Maa’idah of Sayyiduna ‘Isa – peace be upon him – while the smallest of hellfire is that on the top level of hell which is the place for the sinful Ummah of the Holy Prophet Muhammad – may Allah send peace and blessings upon him.

قوله عليه السلام ناركم هذه جزء من سبعين جزأ من نار جهنم وقد غمست فى ماء البحر مرتين ليدنى منها وينتفع بها ولولا ذلك ما دنوتم منها

Hadeeth:  This fire of yours is the seventieth portion of that of hell.  It has been dunked in the ocean water twice, so that you may go near it and benefit from it, otherwise you could not even go anywhere near it.

Tafsir Rooh al-Bayaan of Imam Isma’eel Haqqi ibn Mustafa al-Istanbuli Hanafi t D. 1127 A.H.