[Machine] People used to give out Zakat al-Fitr during the time of the Prophet Muhammad ﷺ as a saa' (a unit of measurement) of barley, dates, salt, or raisins.
كَانَ النَّاسُ يُخْرِجُونَ صَدَقَةَ الْفِطْرِ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ صَاعًا مِنْ شَعِيرٍ أَوْ صَاعًا مِنْ تَمْرٍ أَوْ سلْتٍ أَوْ زَبِيبٍ