(35) باب فَرْضِ صَدَقَةِ الْفِطْرِ قَبْلَ نُزُولِ الزَّكَاةِ
It was narrated that Qais bin Sa'd bin 'Ubadah Said:
"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."
Reference: Sunan an-Nasa'i 2506
In-book reference: Book 23, Hadith 0
English translation: Vol. 3, Book 23, Hadith 2508