Tosefta for Pesachim 9:2

These are the differences between the Passover in Egypt and the Passover of the [ensuing] generations: The Passover in Egypt -- they selected [the Paschal lamb] on the tenth [of Nissan] and slaughtered it on the fourteenth, and they were not liable for excision [for transgressing this commandment]. The Passover of the generations -- they they are liable for excision. The Passover of Egypt -- [sheep or goats with] membranes over the eyes and cataracts were acceptable, and they [could be bought with] the fee [of a whore] or the price [of a dog] (=אתנן ומחיר, see Deut. 23:19), which is not the case with the Passover of the generations. The Passover of Egypt -- as it is said (Ex. 12:4), "[If there are too few in his house for a lamb,] he shall take it along and with his neighbor," which is not the case with the Passover of the generations. Rabbi Shimon says, I say, even in the Passover of the generations, this applies, and all the more so. Why? In order that a person not leave his close neighbor behind [alone] in his house, while he goes and prepares his Paschal lamb at his friend's house, in order to establish what is said (Prov. 27:10), "A close neighbor is better than a faraway brother." The Passover of Egypt -- the blood and fats were not required to go up on the altar, which is not the case with the Passover of the generations. The Passover of Egypt -- it is said of it (Ex. 12:22), "and apply to the lintel and the two doorposts [some of the blood]," which is not the case with the Passover of the generations. The Passover of Egypt -- it is said (ibid.), "and no man shall go out from the entrance of his house until morning," which is not the case with the Passover of the generations. The Passover of Egypt -- each and every one slaughters inside his house. The Passover of the generations -- all Israel slaughters in one place. The Passover of Egypt -- the place of eating [the Paschal lamb] was the same as the place of sleeping. The Passover of the generations -- they may eat it in one place and sleep in another place. [With respect to] both the Passover of Egypt and the Passover of the generations, whoever had male slaves who were not circumcised, or female slaves who had not undergone immersion -- we prevent him (or her) from partaking of the Paschal lamb (see Ex. 12:44). Rabbi Eliezer ben Yaakov says, I say that this verse refers [only] to the Passover of Egypt.