A partner should not eat two dates at a time
باب الْقِرَانِ فِي التَّمْرِ بَيْنَ الشُّرَكَاءِ حَتَّى يَسْتَأْذِنَ أَصْحَابَهُ
Sahih al-Bukhari, Book of Partnership(view book)
Narrated Ibn 'Umar:
The Prophet 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).
حَدَّثَنَا خَلاَّدُ بْنُ يَحْيَى، حَدَّثَنَا سُفْيَانُ، حَدَّثَنَا جَبَلَةُ بْنُ سُحَيْمٍ، قَالَ سَمِعْتُ ابْنَ عُمَرَ ـ رضى الله عنهما ـ يَقُولُ نَهَى النَّبِيُّ ﷺ أَنْ يَقْرُنَ الرَّجُلُ بَيْنَ التَّمْرَتَيْنِ جَمِيعًا، حَتَّى يَسْتَأْذِنَ أَصْحَابَهُ.
Classification
Narrated Jabala:
"While at Medina we were struck with famine. Ibn Az-Zubair used to provide us with dates as our food. Ibn 'Umar used to pass by us and say, "Don't eat two dates together at a time as the Prophet has forbidden eating two dates together at a time (in a gathering) unless one takes the permission of one's companion brother."
حَدَّثَنَا أَبُو الْوَلِيدِ، حَدَّثَنَا شُعْبَةُ، عَنْ جَبَلَةَ، قَالَ كُنَّا بِالْمَدِينَةِ فَأَصَابَتْنَا سَنَةٌ، فَكَانَ ابْنُ الزُّبَيْرِ يَرْزُقُنَا التَّمْرَ، وَكَانَ ابْنُ عُمَرَ يَمُرُّ بِنَا فَيَقُولُ لاَ تَقْرُنُوا فَإِنَّ النَّبِيَّ ﷺ نَهَى عَنِ الإِقْرَانِ، إِلاَّ أَنْ يَسْتَأْذِنَ الرَّجُلُ مِنْكُمْ أَخَاهُ.