Who Was Singing at the Sea?

To the matter:

Rav Naḥman said:

Huna bar Natan said to me that it was taught:

"From where is it derived that the blessing of the grooms is by ten?

As it is stated: And he took ten men of the elders of the city and said: Sit here...” (Ruth 4:2)

And Rabbi Abbahu said:

"It's from here: In assemblies

(mak-helot) bless God, Adonai, from the source of Israel.” (Psalms 68:27)

And what does Rav Naḥman derive from Rabbi Abbahu's verse?

He needs it for what's taught [in a baraita]:

"Rabbi Me-ir would say:

From where do we learn that even fetuses in their mother’s womb recited the song at the Sea?

As it is stated: In assemblies, bless God, Adonai, from the source of Israel.”

And the other one (Rabbi Abbahu) says: If that were so, let the verse say "from the belly [of Israel]"! What is the meaning of "from the source”? It refers to matters of the source.

And what does Rabbi Abbahu derive from Rav Naḥman's verse?

He requires it to interpret a male Ammonite and not a female Ammonite, a male Moabite and not a female Moabite.

For if you thought [of using this verse to learn about minyan for] the marriage blessings, would it not have been sufficient if they were not Elders?

And the other one (Rav Naḥman) [might reject that and say]: If you thought [he was gathering the elders] to determine halakhah, would it not have been sufficient if there were fewer than ten?

Yes [that's true. Instead the number ten is] to publicize the matter,

as Shemu-el said to Rav Ḥana of Baghdad: "Go and bring me an assembly of ten and I will say to you before them [the halakhic determination]: If one transfers property ownership to a fetus, [the fetus] acquires."

And the halakhah is: If one transfers property ownership to a fetus, [the fetus] does not acquire.