حَدَّثَنَا مُسَدَّدٌ، وَسُلَيْمَانُ بْنُ دَاوُدَ الْعَتَكِيُّ، قَالاَ حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، قَالَ قَالَ عَبْدُ اللَّهِفَعَدَلَ النَّاسُ بَعْدُ نِصْفَ صَاعٍ مِنْ بُرٍّ ‏.‏قَالَ وَكَانَ عَبْدُ اللَّهِ يُعْطِي التَّمْرَ فَأَعْوَزَ أَهْلَ الْمَدِينَةِ التَّمْرُ عَامًا فَأَعْطَى الشَّعِيرَ
Translation
Abd’ Allah(b. 'Umar) said “The people then began to pay half a sa’ of wheat later on. The narrator said

'Abd Allah (b. Umar) use to pay dried dates as sadaqah one year the people of Medina lacked dried dates, hence he paid barley.