At the time of Ibn Az-Zubair, we were struck with famine, and he provided us with dates for our food. ʿAbdullah bin ʿUmar used to pass by us while we were eating, and say, "Do not eat two dates together at a time, for the Prophet ﷺ forbade the taking of two dates together at a time (in a gathering)." Ibn ʿUmar used to add, "Unless one takes the permission of one's companions."  

أَصَابَنَا عَامُ سَنَةٍ مَعَ ابْنِ الزُّبَيْرِ فَرَزَقَنَا تَمْرًا فَكَانَ عَبْدُ اللَّهِ بْنُ عُمَرَ يَمُرُّ بِنَا وَنَحْنُ نَأْكُلُ وَيَقُولُ لاَ تُقَارِنُوا فَإِنَّ النَّبِيَّ ﷺ نَهَى عَنِ الْقِرَانِ ثُمَّ يَقُولُ إِلاَّ أَنْ يَسْتَأْذِنَ الرَّجُلُ أَخَاهُ قَالَ شُعْبَةُ الإِذْنُ مِنْ قَوْلِ ابْنِ عُمَرَ  

Ibn Zubair used to provide us with dates during the time that the people were hard pressed because of famine (Once) as we were busy in eating there happened to appear before us Ibn 'Umar. He said: Don't eat two dates together, for Messenger of Allah ﷺ forbade eating them together but only after seeking permission from his brother (partner). Shu'ba said: I do not think these words pertaining to seeking permission but from the words of Ibn 'Umar.  

وَقَدْ كَانَ أَصَابَ النَّاسَ يَوْمَئِذٍ جُهْدٌ وَكُنَّا نَأْكُلُ فَيَمُرُّ عَلَيْنَا ابْنُ عُمَرَ وَنَحْنُ نَأْكُلُ فَيَقُولُ لاَ تُقَارِنُوا فَإِنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنِ الإِقْرَانِ إِلاَّ أَنْ يَسْتَأْذِنَ الرَّجُلُ أَخَاهُ قَالَ شُعْبَةُ لاَ أُرَى هَذِهِ الْكَلِمَةَ إِلاَّ مِنْ كَلِمَةِ ابْنِ عُمَرَ يَعْنِي الاِسْتِئْذَانَ  

Ibn Zubair used to provide us with dates during the time that the people were hard pressed because of famine (Once) as we were busy in eating there happened to appear before us Ibn 'Umar. He said: Don't eat two dates together, for Messenger of Allah ﷺ forbade eating them together but only after seeking permission from his brother (partner). Shu'ba said: I do not think these words pertaining to seeking permission but from the words of Ibn 'Umar. (Using translation from Muslim 2045a)  

وَقَدْ كَانَ أَصَابَ النَّاسَ يَوْمَئِذٍ جَهْدٌ فَكُنَّا نَأْكُلُ فَيَمُرُّ عَلَيْنَا ابْنُ عُمَرَ وَنَحْنُ نَأْكُلُ فَيَقُولُ لَا تُقَارِنُوا فَإِنَّ رَسُولَ اللهِ ﷺ نَهَى عَنِ الْإِقْرَانِ قَالَ حَجَّاجٌ نَهَى عَنِ الْقِرَانِ إِلَّا أَنْ يَسْتَأْذِنَ الرَّجُلُ أَخَاهُ وَقَالَ شُعْبَةُ لَا أُرَى هَذِهِ الْكَلِمَةَ فِي الِاسْتِئْذَانِ إِلَّا مِنْ كَلَامِ ابْنِ عُمَرَ