Hadith 5:206
10007. Hafs narrated to us, from Ja'far, from his father, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "When the food reaches five wasqs, then in it is the charity (zakat)."
حدثنا حفص عن جعفر عن أبيه قال قال رسول الله صلى الله عليه وسلم إذا بلغ الطعام خمسة أوسق ففيه الصدقة