The Prophet ﷺ sent Umar b. al-Khattab to collect sadaqa (All the people paid the zakat but ibn-jamil, Khalid b. al-walid and al-abbas refused. So the Messenger of Allah ﷺ said : Ibn-jamil is not (so much) objecting, but he was poor and Allah enriched him. As for Khalid b. Walid, you are wronging him, for he has kept back his courts of mail and weapons to use them in Allah’s path. As for al-Abbas, the uncle of the Messenger of Allah(May peace be upon him), I shall be responsible for it and an equal amount along with it. Then he said did you not know(Umar) that a man’s paternal uncle is of the same stock as the father or his father?  

بَعَثَ النَّبِيُّ ﷺ عُمَرَ بْنَ الْخَطَّابِ عَلَى الصَّدَقَةِ فَمَنَعَ ابْنُ جَمِيلٍ وَخَالِدُ بْنُ الْوَلِيدِ وَالْعَبَّاسُ فَقَالَ رَسُولُ اللَّهِ ﷺ مَا يَنْقِمُ ابْنُ جَمِيلٍ إِلاَّ أَنْ كَانَ فَقِيرًا فَأَغْنَاهُ اللَّهُ وَأَمَّا خَالِدُ بْنُ الْوَلِيدِ فَإِنَّكُمْ تَظْلِمُونَ خَالِدًا فَقَدِ احْتَبَسَ أَدْرَاعَهُ وَأَعْتُدَهُ فِي سَبِيلِ اللَّهِ وَأَمَّا الْعَبَّاسُ عَمُّ رَسُولِ اللَّهِ ﷺ فَهِيَ عَلَىَّ وَمِثْلُهَا ثُمَّ قَالَ أَمَا شَعَرْتَ أَنَّ عَمَّ الرَّجُلِ صِنْوُ الأَبِ أَوْ صِنْوُ أَبِيهِ  

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