Rif Pesachim 27a {Pesachim 120a; 119b; 120a}

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27a

{Pesachim 120a}
{the Mishna continues}
If some of them slept, they may eat.
All of them, they may not eat.
Rabbi Yossi said: If they dozed, they may eat. If they fell into a heavy sleep, they may not eat.

{Pesachim 119b}
Gemara:
What is {meant by} "afikoman?"
Rav said: That they should not uproot themselves from one company to another.
And Shmuel said: Such as mushrooms for myself and pigeons for Abba.

Chanania, Rabbi Shela, and Rabbi Yochanan say: such as dates, parched grain, and nuts.
There is a brayta in accordance with Rabbi Yochanan: They should not conclude after the korban Pesach with an afikoman -- such as dates, parched grain, and nuts.

Rav Yosef cited Rav Yehuda who cited Shmuel: They should not conclude after matza with an afikoman.
{Pesachim 120a}
Mar Zutra taught it thus: Rav Yosef cited Rav Yehuda who cited Shmuel: They should not conclude after the korban Pesach with an afikoman -- but after matza, they may conclude.

It is logical to us in accordance with the first version, for it is according to the gemara, while the latter version is according to Mar Zutra. Therefore we act in accordance with the former version, which is in accordance with the gemara, and so does the world act -- that after they eat sundry treats and types of fruit, they eat at the end an olive's volume of Shmura Matza, and they do not taste after this anything except for the cup of birkat haMazon and the cup of Hallel. And one who thirsty, he does not have permission to drink anything except water, but wine, no.

And if he does not have sufficient Shmura Matza for the entire meal, but only a single olive's volume, he should eat at the beginning from the non-Shmura, and bless upon it {only} haMotzi. And at the end {of the entire meal, much later; other explanations are possible}, he should bless upon the olive's volume of Shmura leEchol matza {=al achilat matza} and eat it. And {in the middle} he should bless upon the maror and eat, and then return and wrap {non-Shmura} matza and maror together and eat without a blessing.
{? Alternatively, based on the order given, rather than referring to the very end of the meal, perhaps Rif is suggesting two olive measures are required for matza at the start, as some have the custom, and so the Shmura is eaten immediately after the non-Shmura at the start ?}

For they learnt {in a brayta}: Sponge-cakes, honey-cakes, and iskeritin, one may fill his belly with them, so long as he eats an olive's volume of matza at the end.

And one who lacks wine on the night of Pesach may make kiddush on a loaf {in this case, matza}, just as is the case on Shabbat and Yom Tov. And how should he act? He begins at the start with hamotzi and breaks the loaf, and he places his hands upon it until he finishes kiddush. And after he finishes kiddush, he blesses leEchol matza and eats, and afterwards makes use of {or: dips} with other vegetables {=karpas} and they move the table away, and afterwards he says Ma Nishtana and all of the haggada until ga`al yisrael {"Who redeemed Israel"} and blesses on maror and eats, and then wraps matza and maror and eats with no blessing.

And one who needs to make the blessing in two or three houses {for other people}, how should he act? He blesses initially in his own house and eats