תּלמוד אויף במדבר 1:3

There was no [divine] speaking with Moshe, as it says: "So it was, when all the men of war finished dying from among the people-" (Deuteronomy 2: 17), followed closely by "-that the Lord spoke to me saying..." (Ibid. 18), this is [a reference to] the [divine] speech.

Ulla said: [This is] the day that Hoshea ben Elah (a king of Israel) cancelled the guards whome Yerovam placed on the roads, to prevent Yisrael from going up [to Jerusalem].

Rav Matana said: [This is] the day that the massacred [people] of Beitar were permitted [to be] buried. As Rav Matana said: That day in which the massacred of Beitar were permitted to be buried, [the Sanhedrin] instituted in Yavneh [the 4th blessing in Birkat haMazon] the blessing of "Hatov ve-Hametiv" (Who is benevolent, and Who does good). Hatov - [in recognition of the miracle] that [the bodies] did not smell, ve-Hametiv - [in recognition] that they were permitted to be buried.