"Al-Abbas asked the Messenger of Allah about paying his charity (Zakat) in advance before its time is due (by being in possession for a whole year), he permitted him to do that."  

أَنَّ الْعَبَّاسَ سَأَلَ رَسُولَ اللَّهِ ﷺ عَنْ تَعْجِيلِ صَدَقَتِهِ قَبْلَ أَنْ تَحِلَّ فَرَخَّصَ لَهُ فِي ذَلِكَ  

the Prophet said to Umar: "We have taken this year's Zakat from Al-Abbas in the previous year."  

أَنَّ النَّبِيَّ ﷺ قَالَ لِعُمَرَ إِنَّا قَدْ أَخَذْنَا زَكَاةَ الْعَبَّاسِ عَامَ الأَوَّلِ لِلْعَامِ قَالَ وَفِي الْبَابِ عَنِ ابْنِ عَبَّاسٍ