Language:
كتاب المظالم
46  
Oppressions
(14)
Chapter: If somebody allows another to do something
(14)
باب إِذَا أَذِنَ إِنْسَانٌ لآخَرَ شَيْئًا جَازَ
Sahih al-Bukhari 2455

Narrated Jabala:

"We were in Medina with some of the Iraqi people, and we were struck with famine and Ibn Az- Zubair used to give us dates. Ibn `Umar used to pass by and say, "The Prophet (ﷺ) forbade us to eat two dates at a time, unless one takes the permission of one's companions."

حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنْ جَبَلَةَ، كُنَّا بِالْمَدِينَةِ فِي بَعْضِ أَهْلِ الْعِرَاقِ، فَأَصَابَنَا سَنَةٌ، فَكَانَ ابْنُ الزُّبَيْرِ يَرْزُقُنَا التَّمْرَ، فَكَانَ ابْنُ عُمَرَ ـ رضى الله عنهما ـ يَمُرُّ بِنَا فَيَقُولُ إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنِ الإِقْرَانِ، إِلاَّ أَنْ يَسْتَأْذِنَ الرَّجُلُ مِنْكُمْ أَخَاهُ‏.‏
Reference : Sahih al-Bukhari 2455
In-book reference : Book 46, Hadith 16
USC-MSA web (English) reference : Vol. 3, Book 43, Hadith 635
  (deprecated numbering scheme)