It is narrated from ‘Ikrimah bin Salamah that there were two brothers from Banu Mughira. One of them swore an oath to free a slave and said that he would not allow his neighbor to place a beam in his wall. Then, when both of them met Sayyiduna Majma‘ bin Yazid Ansari (may Allah be pleased with him) and several Companions, they said: We testify that the Messenger of Allah (peace and blessings be upon him) said: A neighbor should not prevent his neighbor from placing a beam or the like in his wall. Upon hearing this, the one who had sworn the oath said: O my brother! I have realized that this decision will be against me and in your favor, while I have also sworn an oath. Now, you may build a pillar next to my wall. So he did so, and then placed wood on the pillar. ‘Amr said to me: I had seen this thing.