(21) باب مَنْ رَوَى نِصْفَ، صَاعٍ مِنْ قَمْحٍ
Al-Hasan said:
Ibn Abbas preached towards the end of Ramadan on the pulpit (in the mosque) of al-Basrah. He said: Bring forth the sadaqah relating to your fast. The people, as it were, could not understand. Which of the people of Medina are present here? Stand for your brethren, and teach them, for they do not know. The Messenger of Allah (ﷺ) prescribed this sadaqah as one sa' of dried dates or barley, or half a sa' of wheat payable by every freeman or slave, male or female, young or old. When Ali came (to Basrah), he found that price had come down. He said: Allah has given prosperity to you, so give one sa' of everything (as sadaqah). The narrator Humayd said: Al-Hasan maintained that the sadaqah at the end of Ramadan was due on a person who fasted.
Reference: Sunan Abi Dawud 1622
In-book reference: Book 9, Hadith 67
English translation: Book 9, Hadith 1618