How did Herod who began as a slave end up being a king? And how did he end up being the one who renovated the Beit Hamikdash? What are the halachot in a garden or in a field where there is no custom? In a case where one cannot force the other to build a wall, one builds it on one’s property exclusively and puts a sign on it. What is the sign? Why in the case where both build the wall does the mishna say to put up a sign on both sides?