Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
nasai:5558 – Aḥmad b. Sulaymān > Yazīd > Ḥumayd > ʿIkrimah > Ibn ʿAbbās

"Al-Busr on their own are unlawful and with dried dates they are unlawful."  

النسائي:٥٥٥٨ – أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ قَالَ حَدَّثَنَا يَزِيدُ قَالَ أَنْبَأَنَا حُمَيْدٌ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ قَالَ

الْبُسْرُ وَحْدَهُ حَرَامٌ وَمَعَ التَّمْرِ حَرَامٌ  

See similar narrations below:

Collected by Nasāʾī's Kubrá
nasai-kubra:5048 – Aḥmad b. Sulaymān > Yazīd > Ḥumayd > ʿIkrimah > Ibn ʿAbbās

"Al-Busr on their own are unlawful and with dried dates they are unlawful." (Using translation from Nasāʾī 5558)  

الكبرى للنسائي:٥٠٤٨ – أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ قَالَ حَدَّثَنَا يَزِيدُ قَالَ أَخْبَرَنَا حُمَيْدٌ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ قَالَ

«الْبُسْرُ وَحْدَهُ حَرَامٌ وَمَعَ التَّمْرِ حَرَامٌ»