פסח שני

But there were certain men, who were unclean by the dead body of a man, so that they could not keep the passover on that day; and they came before Moses and before Aaron on that day. And those men said unto him: ‘We are unclean by the dead body of a man; wherefore are we to be kept back, so as not to bring the offering of the LORD in its appointed season among the children of Israel?’ And Moses said unto them: ‘Stay ye, that I may hear what the LORD will command concerning you.’ And the LORD spoke unto Moses, saying: ’Speak unto the children of Israel, saying: If any man of you or of your generations shall be unclean by reason of a dead body, or be in a journey afar off, yet he shall keep the passover unto the LORD; in the second month on the fourteenth day at dusk they shall keep it; they shall eat it with unleavened bread and bitter herbs; they shall leave none of it unto the morning, nor break a bone thereof; according to all the statute of the passover they shall keep it. But the man that is clean, and is not on a journey, and forbeareth to keep the passover, that soul shall be cut off from his people; because he brought not the offering of the LORD in its appointed season, that man shall bear his sin.

What is the difference between the first Pesah and the second?The first is subject to the prohibition of [chametz] shall not be seen and [chametz] shall not be found, while at the second matzah and chametz are in the house with him. The first requires [the reciting of] Hallel when it is eaten, while the second does not require Hallel when it is eaten. But both require [the reciting of] Hallel when they are sacrificed, and they are eaten roasted with matzah and bitter herbs, and they override Shabbat.