"We used to fast on 'Ashura and give Zakatul-Fitr, and when the command to fast in Ramadan was revealed, and the command to give Zakah was revealed, we were neither commanded to give it, nor told not to do so, and we used to do it." (Using translation from Nasāʾī 2506)
«كُنَّا نَصُومُ عَاشُورَاءَ وَنُؤَدِّي صَدَقَةَ الْفِطْرِ فَلَمَّا نَزَلَ رَمَضَانُ وَنَزَلَتِ الزَّكَاةُ لَمْ نُؤْمَرْ بِهِ وَلَمْ نُنْهَ عَنْهُ وَكُنَّا نَفْعَلُهُ»