Mishkat al-Masabih 11 Business Transactions كتاب البيوع 199

وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يَمْنَعْ جَارٌ جَارَهُ أَنْ يَغْرِزَ خَشَبَةً فِي جِدَاره»

Abu Huraira reported God’s Messenger as saying, “One must not prevent his neighbour from fixing a beam in his wall.” (Bukhari and Muslim.)