بُلُوغُ الْمَرَامِ
Bulugh al-Maram 611
The Book of Zakah
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] .
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.
Sunnah.com reference: Book 4, Hadith 14