Rif Rosh HaShana 1b {Rosh HaShana 4a continues; 2a; 5a}

HIDE/SHOW IMAGE
1b

{Rosh HaShana 4a continues}
וְעָשִׂיתָ - this is an adjuration to bet din to enforce the law.
כַּאֲשֶׁר נָדַרְתָּ - this is a neder {vow}
לַה' אֱלֹקֶיךָ - these are the sin-offerings and guilt-offerings, burnt-offerings and peace-offerings (chatat, asham, olah, shelamim}
נְדָבָה - "voluntarily" means what it implies
אֲשֶׁר דִּבַּרְתָּ - refers to donations to the repairs of the Temple
בְּפִיךָ - refers to charity

Rava said: And charity you are obligated in it immediately {rather than 3 festivals}
What is the reason? For the paupers are {always} there {in need of help}.

{Rosh HaShana 2a}
Mishna:
The first of Tishri is New Year's day for {ordinary} years, and for shemitta years and yovel; and also for the planting of trees and for herbs.
On the first day of Shevat is the New Year for trees, according to the school of Shammai; but the school of Hillel says it is on the fifteenth of the same month.

{Rosh HaShana 5a}
Gemara:
"New Year's day for years":
To what halachic effect?
Rav Pappa said: For shetarot {legal documents}