كتاب الزكاة
4  
The Book of Zakah
Bulugh al-Maram 611
Ali (RAA) narrated that al-Abbas (RAA) asked the Messenger of Allah (ﷺ) to allow him to pay his Zakah before its due date, and he gave him permission to do so.’ Related by At-Tirmidhi and Al-Hakim.
وَعَنْ عَلِيٍّ ‏- رضى الله عنه ‏- أَنَّ اَلْعَبَّاسَ ‏- رضى الله عنه ‏- { سَأَلَ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-فِي تَعْجِيلِ صَدَقَتِهِ قَبْلَ أَنْ تَحِلَّ, فَرَخَّصَ لَهُ فِي ذَلِكَ } رَوَاهُ اَلتِّرْمِذِيُّ, وَالْحَاكِم ُ 1‏ .‏
Reference : Bulugh al-Maram 611
In-book reference : Book 4, Hadith 611
English translation : Book 4, Hadith 634
Hadith Text
Reference