(36) باب مَكِيلَةِ زَكَاةِ الْفِطْرِ
It was narrated that Abu Raja' said:
I heard Ibn 'Abbas deliver a Khutbah from your Minbar - meaning the Minbar in Al-Basrah - saying: 'Sadaqatul Fitr is a Sa' of food." (Sahih)Abu 'Abdur-Rahman (An-Nasa'i) said: This is the most reliable of the three.
Reference: Sunan an-Nasa'i 2510
In-book reference: Book 23, Hadith 0
English translation: Vol. 3, Book 23, Hadith 2512