(4) باب الْقِرَانِ فِي التَّمْرِ بَيْنَ الشُّرَكَاءِ حَتَّى يَسْتَأْذِنَ أَصْحَابَهُ
Narrated Ibn `Umar:
The Prophet (ﷺ) decreed that one should not eat two dates together at a time unless he gets the permission from his companions (sharing the meal with him). (ID)
Reference (ID): Sahih al-Bukhari 2489 (ID)
In-book reference (ID): Book 47, Hadith 7 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 44, Hadith 669 (ID)