Sayyidina Abu Hurayrah reported that Allah’s Messenger said, “If one of you seeks permission of his neighbour to keep a piece of wood on his wall then he should not disallow him.” When Abu Hurayrah narrated this hadith, the people bowed down their heads. He asked, “What is wrong? Why do you turn away from it? By Allah, I will strike with it (the hadith) between your shoulders.” (He meant that he would compel them to abide by it).
[Bukhari 2463]