Sahih al-Bukhari 1509
Book 24: Obligatory Charity Tax (Zakat) · Narrated by Ibn `Umar
Arabic
حَدَّثَنَا آدَمُ، حَدَّثَنَا حَفْصُ بْنُ مَيْسَرَةَ، حَدَّثَنَا مُوسَى بْنُ عُقْبَةَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم أَمَرَ بِزَكَاةِ الْفِطْرِ قَبْلَ خُرُوجِ النَّاسِ إِلَى الصَّلاَةِ.
English translation
Narrated Ibn `Umar:The Prophet (ﷺ) ordered the people to pay Zakat-ul-Fitr before going to the `Id prayer
Reference: Sahih al-Bukhari 1509, Book of Obligatory Charity Tax (Zakat). English translation by Dr. Muhammad Muhsin Khan.