Messenger of Allah ﷺ made it incumbent on all the slave or free Muslims, male or female, to pay one Sa' of dates or barley as Zakat-ul-Fitr. (Using translation from Bukhārī 1504)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ زَكَاةُ الْفِطْرِ فَرْضٌ عَلَى كُلِّ مُسْلِمٍ حُرٍّ وَعَبْدٍ ذَكَرٍ وَأُنْثَى مِنَ الْمُسْلِمِينَ صَاعٌ مِنْ تَمْرٍ أَوْ صَاعٌ مِنْ شَعِيرٍ