وَعَنْ عَلِيٍّ رضى الله عنه أَنَّ اَلْعَبَّاسَ رضى الله عنه
«سَأَلَ اَلنَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي تَعْجِيلِ صَدَقَتِهِ قَبْلَ أَنْ تَحِلَّ، فَرَخَّصَ لَهُ فِي ذَلِكَ»
Al-Abbas (RAA) asked the Messenger of Allah (sallallahu alayhi wa sallam) 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.