وَأَمَّا مَنْ خَفَّتْ مَوَازِينُهُ

But as for the one whose scales are light,

Tafsir al-Tabari                                                         تفسیر الطبری                                

وَأَمَّا مَنْ خَفَّ وَزْنُ حَسَنَاتِهِ، فَمَأْوَاهُ وَمَسْكَنُهُ الْهَاوِيَةُ

i.e. the one whose scales of good deeds are light, his adobe is hell.

Tafsir Al-Tabari (Tafsir Ibn Jareer / Jame’ al-Bayaan fi Taweel al-Quraan) of Imam Abu Ja’far Muhammad ibn Jareer al-Tabri t D. 310 A.H.

Tafsir Rooh al-Bayaan                                                                                              تفسیر روح البیان                                                

عن ابن مسعود رضى الله عنه يحاسب الناس يوم القيامة فمن كانت حسناته اكثر من سيئاته بواحدة دخل الجنة ومن كانت سيئاته اكثر من حسناته بواحدة دخل النار

Sayyiduna Ibn Mas’ood – may Allah be pleased with him – reported that people will be held for accountability on the Day of Judgment.  Whoever’s good deeds will outweigh his bad deeds even if by one, he will enter Paradise and the one whose bad deeds outweigh his good deeds even if by one, he will enter hell.

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