قَدْ اَفْلَحَ مَنۡ زَکّٰىہَا ﴿۹﴾۪ۙ

Indeed successful is the one who made it pure.

Tafsir al-Tabari                                                             تفسیر الطبری                                

قَدْ أَفْلَحَ مَنْ زَكَّى اللَّهُ نَفْسَهُ، فَكَثَّرَ تَطْهِيرَهَا مِنَ الْكُفْرِ وَالْمَعَاصِي، وَأَصْلَحَهَا بِالصَّالِحَاتِ مِنَ الْأَعْمَالِ.

Indeed successful is the one whose soul Allah Almighty has purified and cleansed it thoroughly off disbelief and disobedience and reformed him to engage in good deeds.

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 al-Baghawi                                                        تفسیر البغوی                            

عَنْ زَيْدِ بْنِ أَرْقَمَ قَالَ: لَا أَقُولُ لَكُمْ إِلَّا مَا قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَنَا: “اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنَ الْعَجْزِ وَالْكَسَلِ وَالْبُخْلِ وَالْجُبْنِ وَالْهَمِّ وَعَذَابِ الْقَبْرِ، اللَّهُمَّ آتِ نَفْسِي تَقْوَاهَا وَزَكِّهَا أَنْتَ خَيْرُ مَنْ زَكَّاهَا، أَنْتَ وَلِيُّهَا وَمَوْلَاهَا، اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مَنْ عِلْمٍ لَا يَنْفَعُ، وَمِنْ نَفْسٍ لَا تَشْبَعُ، وَمَنْ قَلْبٍ لَا يَخْشَعُ، وَمِنْ دَعْوَةٍ لَا يُسْتَجَابُ لَهَا

Sayyiduna Zaid ibn Arqam – may Allah be pleased with him – is reported to have said:  I am not going to say anything but only that which Allah’s Messenger – may Allah send peace and blessings upon him – used to say. He used to supplicate:” O Allah, I seek refuge in You from incapacity, from sloth, from cowardice, from miserliness, decrepitude and from torment of the grave. O Allah, grant to my soul the sense of righteousness and purify it, for You art the Best Purifier thereof. You are the Protecting Friend thereof, and Guardian thereof. O Allah, I seek refuge in You from the knowledge which does not benefit, from the heart that does not have the fear (of Allah), from the soul that does not feel contented and  from the supplication that is not answered.”

Tafsir al-Baghawi (Ma’aalim al-Tanzeel) of Muhiyy al-Sunnah Imam Abu Muhammad Al-Husain ibn Mas’ood al-Baghwi al-Shafe’I t D. 510 A.H.

Tafsir Rooh al-Bayaan                                                                                              تفسیر روح البیان                                                

وابن عباس رضى الله عنهما روايت كرده كه حضرت رسول الله صلى الله عليه وسلم نزديك تلاوت اين آيت فرمودى كه تزكيه انفس موجب تزكيه دل است هرگاه كه نفس از شوب هوا مزكى شود فى الحال دل از لوث تعلق بما سوى مصفى كردد

Hadeeth:  Sayyiduna Ibn ‘Abbas – may Allah be pleased with him – reported that the Holy Prophet – may Allah send peace and blessings upon him – stated during the recitation of this verse:  The purification of the soul is a means to attain the purification of the heart, for when the soul becomes purified of the cardinal desires then it becomes free off any other attachment except to Allah.

تا نفس مبرا ز مناهى نشود

دل آيينه نور الهى نشود

Until the soul is not purified of the impurities

The heart cannot become the manifestation of the Allah’s radiance.

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