رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 307
The Book of Miscellany
Rights of Neighbors
وَعَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: لَا يَمْنَعُ جَارٌ جارة أَنْ يَغْرِزَ خشبة فِي جِدَارِهِ ثُمَّ يَقُولُ أَبُو هُرَيْرَةَ: مَا لِي أَرَاكُمْ عَنْهَا مُعْرِضِينَ! وَاللَّهِ لأَرْمِيَنَّ بِهَا بَيْنَ أَكْتَافِكُمْ. ((مُتَّفَقٌ عَلَيْهِ)).
Abu Hurairah (May Allah be pleased with him) reported: Messenger of Allah (ﷺ) said, "No one should prohibit his neighbour from placing a peg in his wall". Abu Hurairah (May Allah be pleased with him) added: Now I see you turning away from this (Sunnah), but by Allah, I shall go on proclaiming it. [Al-Bukhari and Muslim].
Riyad as-Salihin, 307