Sahih Muslim Book 10, Hadith Number 3918
Chapter : Unknown.
Abu Huraira (Allah be pleased with him) reported Allah’s Messenger (may peace be upon him) as saying: None among you should prevent his neighbour from fixing a beam in his wall. Abu Huraira (Allah be pleased with him) then said: What is this that I see you evading (this injunction of the Holy Prophet)? By Allah, I will certainly throw it between your shoulders (narrate this to you.)