عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ إِذَا اخْتَلَفْتُمْ فِي الطَّرِيقِ فَدَعُوا سَبْعَ أَذْرُعٍ ثُمَّ ابْنُوا وَمَنْ سَأَلَهُ جَارُهُ أَنْ يَدْعَمَ عَلَى حَائِطِهِ فَلْيَدَعْهُ
Narrated by Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: When you disagree about the road, then leave seven hand-spans and build the buildings, and whoever asks his neighbor to allow him to place a beam on his wall, he should let him place it.