Moed Katan 1:2 - 1:3

האמה – trenches that they would make in the ground that in the water would travel around the field and from field to field, which are called אמה/river-arms, canals/channels, because they are one cubit wide at a depth of a cubit.

בתחלה – if there never was one [before], we don’t make them ab initio on the Festival because of the trouble/labor.

ובשביעית – because it would appear like digging in the ground during the Seventh Year.

ומתקנים את המקולקלת – if dirt fell into it and does not bring forth an uninterrupted flow, we repair it, but we don’t make it ab initio on the Festival. And the Halakha is according to the Sages.

ומתקנים קלקולי המים – water that has entered in the indentations/holes to drink from them.

וחוטטין – clean and dig and remove from inside them rocks and chips and sandy matter in grain that fell in them.

ומציינין – make markings of graves that they would cleanse with plaster and pour on the grave, and it is a sign to those walking not to pass over a place of ritual uncleanness (see Mishnah Shekalim, Chapter 1, Mishnah 1).

ויוצאין – agents of the Jewish court would go out to inspect the fields that were sown with mixed seeds and uproot them, because they take their compensation for this from the donations to the Temple treasury for congregational sacrifices, and on the days of the Festival, they are hired cheaply because they are idle [from work].

מושכין את המים – that is underneath the tree, and this is for another tree, where there is no strenuous labor, but he should not water the entire field, and we are speaking of a field sufficiently watered by rain, which does not suffer loss, for the rain waters are sufficient for it, but when we water it, there is great and liberal provision.

לא שתו – there was no loss

בזה ובזה – even if they had not drunk [water] and even a field that is sufficiently watered by rain, and because of the liberal provision the Sages permitted it. And the Halakha is according to Rabbi Eliezer ben Yaakov. And the anonymous Mishnah (i.e., Mishnah 1): We water the irrigated field that is above is according to him (i.e., Rabbi Eliezer ben Yaakov). However, a moist field whose ground is like plaster/clay/mud, it is permitted to water it during the Festival, and even according to Rabbi Eliezer ben Yaakov, for they are considered like seeds that drank [water] before the Festival.