Sahih al-Bukhari Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)) Khãlid bin Aslam Sahih We went out with ‘Abdullãh bin ‘Umar and he said, “This (Verse) was revealed before the prescription of Zakat, and when Zakãt was prescribed, Allah made it a means of purifying one’s wealth.” https://parallelquran.com/hadith/sahih-al-bukhari-4455/