The Prophet ﷺ ordered (Muslims) to give one Sa' of dates or one Sa' of barley as Zakat-ul-Fitr. The people rewarded two Mudds of wheat as equal to that.
أَمَرَ النَّبِيُّ ﷺ بِزَكَاةِ الْفِطْرِ صَاعًا مِنْ تَمْرٍ أَوْ صَاعًا مِنْ شَعِيرٍ قَالَ عَبْدُ اللَّهِ ؓ فَجَعَلَ النَّاسُ عِدْلَهُ مُدَّيْنِ مِنْ حِنْطَةٍ
The people equalised it (then) with two mudds of fine wheat.
إِنَّ رَسُولَ اللَّهِ ﷺ أَمَرَ بِزَكَاةِ الْفِطْرِ صَاعٍ مِنْ تَمْرٍ أَوْ صَاعٍ مِنْ شَعِيرٍ قَالَ ابْنُ عُمَرَ فَجَعَلَ النَّاسُ عِدْلَهُ مُدَّيْنِ مِنْ حِنْطَةٍ
the Messenger of Allah enjoined Zakatul-Fitr, one Sa of dates or one Sa of barley.Abdullah said: The people made two Mudd (equal to half of a Sa) of wheat as its equivalent.
أَنَّ رَسُولَ اللَّهِ ﷺ أَمَرَ بِزَكَاةِ الْفِطْرِ صَاعًا مِنْ تَمْرٍ أَوْ صَاعًا مِنْ شَعِيرٍ قَالَ عَبْدُ اللَّهِ فَجَعَلَ النَّاسُ عِدْلَهُ مُدَّيْنِ مِنْ حِنْطَةٍ
[Machine] "The Messenger of Allah ﷺ commanded the payment of Zakat al-Fitr from every free or slave, young or old, one saa’ of wheat or one saa’ of dates." Ibn Umar said, "People later replaced it with a measure of barley."
«أَمَرَ رَسُولُ اللَّهِ ﷺ بِزَكَاةِ الْفِطْرِ عَنْ كُلِّ صَغِيرٍ وَكَبِيرٍ حُرٍّ أَوْ عَبْدٍ صَاعًا مِنْ شَعِيرٍ أَوْ صَاعًا مِنْ تَمْرٍ» قَالَ ابْنُ عُمَرَ «فَعَدَلَهُ النَّاسُ بِمُدَّيْنِ مِنْ بُرٍّ»
the Messenger of Allah enjoined Zakatul-Fitr, one Sa of dates or one Sa of barley.Abdullah said: The people made two Mudd (equal to half of a Sa) of wheat as its equivalent. (Using translation from Ibn Mājah 1825)
«أَنَّ رَسُولَ اللَّهِ ﷺ أَمَرَ بِصَدَقَةِ الْفِطْرِ صَاعًا مِنْ تَمْرٍ أَوْ صَاعًا مِنْ شَعِيرٍ» قَالَ عَبْدُ اللَّهِ بْنُ عُمَرَ فَجَعَلَ النَّاسُ عِدْلَهُ مُدَّيْنِ مِنْ حِنْطَةٍ