Al-Abbas asked the Prophet ﷺ about paying the sadaqah (his zakat) in advance before it became due, and he gave permission to do that. Abu Dawud said: This tradition has also been transmitted by Hushaim through a different chain of narrators. The version of Hushaim is more sound.
أَنَّ الْعَبَّاسَ سَأَلَ النَّبِيَّ ﷺ فِي تَعْجِيلِ صَدَقَتِهِ قَبْلَ أَنْ تَحِلَّ فَرَخَّصَ لَهُ فِي ذَلِكَ قَالَ مَرَّةً فَأَذِنَ لَهُ فِي ذَلِكَ