حَدَّثَنَا مُسَدَّدٌ، وَسُلَيْمَانُ بْنُ دَاوُدَ الْعَتَكِيُّ، قَالاَ حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، قَالَ قَالَ عَبْدُ اللَّهِ فَعَدَلَ النَّاسُ بَعْدُ نِصْفَ صَاعٍ مِنْ بُرٍّ ‏.‏ قَالَ وَكَانَ عَبْدُ اللَّهِ يُعْطِي التَّمْرَ فَأَعْوَزَ أَهْلَ الْمَدِينَةِ التَّمْرُ عَامًا فَأَعْطَى الشَّعِيرَ ‏.‏

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. Translation Not Available

Book Ref: Sunan Abi Dawud Book 9 Hadith 1615
Web Ref:  Sunan Abi Dawud Book 9 Hadith 1611