Ikrimah bin Salamah says that two brothers from Banu Mughira came to meet Sayyiduna Majma’ bin Yazid (one of them swore that if the other placed a beam on his wall, his slave would be set free). Sayyiduna Majma’ said: I bear witness that the Prophet (peace and blessings be upon him) said:“No neighbor should place a beam on his neighbor’s wall.”Upon hearing this, the one who had sworn said,“Brother, now I know that the decision of the Shari’ah is in your favor, and I have also sworn an oath. Now, if you place a beam on my wall, I will have to set my slave free. You may build a pillar behind my wall.”So the other did exactly that and placed his beam on that pillar.