أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا يَزِيدُ، قَالَ أَنْبَأَنَا حُمَيْدٌ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ الْبُسْرُ وَحْدَهُ حَرَامٌ وَمَعَ التَّمْرِ حَرَامٌ‏.‏

It was narrated that Ibn 'Abbas said: "Al-Busr on their own are unlawful and with dried dates they are unlawful." Translation Not Available

Book Ref: Sunan An Nisai Book 51 Hadith 5558
Web Ref:  Sunan An Nisai Vol 6 Book 51 Hadith 5560