What are the differences between the first pesach and the second? —- The first [pesach] comes under the prohibition of, It shall not be seen and it shall not be found (Exodus 13:7, 12:19), whereas at the second [pesach], [both] matzah and chametz are with him in the house; the first requires the recitation of Hallel during [the pesach's] eating, but the second does not require Hallel during its eating.  Both require the recitation of Hallel when they are offered; [both] are eaten roasted, together with matzah and bitter herbs; and [both] override the Sabbath.