Maliks Muwatta Book 17, Hadith Number 57.

Section : When to Send the Zakat al-Fitr.

Yahya related to me that Malik had seen that the people of knowledge used to like to pay the zakat al-fitr after dawn had broken on the day of the Fitr before they went to the place of prayer.

Malik said, “There is leeway in this, if Allah wills, in that it can be paid either before setting out (for the prayer) on the day of Fitr or afterwards.”