Mishkat al-Masabih 11 Business Transactions كتاب البيوع 189

وَعَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «مَنْ دَخَلَ حَائِطًا فَلْيَأْكُلْ وَلَا يَتَّخِذْ خُبْنَةً» . رَوَاهُ التِّرْمِذِيُّ وَابْنُ مَاجَهْ وَقَالَ التِّرْمِذِيُّ هَذَا حَدِيث غَرِيب

Ibn ‘Umar reported the Prophet as saying, “If anyone enters a garden he may eat, but he must not take anything away in his clothing.” Tirmidhi and Ibn Majah transmitted it, Tirmidhi saying this is a gharib tradition.