(25) باب نَهْيِ الآكِلِ مَعَ جَمَاعَةٍ عَنْ قِرَانِ تَمْرَتَيْنِ وَنَحْوِهِمَا فِي لُقْمَةٍ إِلاَّ بِإِذْنِ أَصْحَابِهِ
Jabala b. Suhaim reported:
I heard Ibn 'Umar as saying that Allah's Messenger (ﷺ) forbade anyone taking two dates together without seeking the consent of his companions.
Reference: Sahih Muslim 2045 c
In-book reference: Book 36, Hadith 209
USC-MSA web (English) reference(deprecated numbering scheme): Book 23, Hadith 5077