Keilim 27:4 - 27:5

מכולם – from any of them that he will trim (from the list provided in the first two Mishnayot of this chapter) one handbreadth by one handbreadth, it is appropriate to become defiled through sitting, For those measurements that are taught in the Mishnah above, the cloth is three [handbreadths] by three [handbreadths] square for uncleanness through treading and the sack is four [handbreadths] by four [handbreadths] square, etc., it would not other than with a piece of cloth or sack or hide or matting that was not cut or repaired for sitting. But trimming, that is cutting and repair from one of all of them one-handbreadth by one-handbreadth square in order to sit upon it, is impure through sitting, for occasionally one trims and makes patches from one of them for the pack-saddle/cushion of a donkey and sits upon it, but it will not be other than a handbreadth by a handbreadth.

מכל מקום – and even from the sides. But Rabbi Shimon holds that from the sides is not appropriate for sitting. But the Halakha is not according to Rabbi Shimon [but according to the Sages – anyone who trims anywhere one-handbreadth by one-handbreadth, it is impure.].

נפה וכברה (sifter or a sieve) – they are [made] of [leather] hides. And sometimes we make a sifter from hair, and its law is like the law for a sack. And similarly, sometimes they make a sieve from ropes of parings/shavings used for basket work and of bulrushes/reed-grass, and its law is like that of matting.

עד שיקצע (until one trims it/cuts off rough ends) – that he will cut and repair for sitting (see Tractate Kelim, Chapter 20, Mishnah 4). And the Halakha is according to the Sages.

אע"פ שאין בו גבוה טפח – and even though it is [the seat] of an adult, it does not become susceptible to receive ritual purity until it is less than a handbreadth, as is taught in the Mishnah above in the Chapter “The Table and the Delphica” [Chapter 22, Mishnah 3], a seat for a child is appropriate for sitting even with less than a handbreadth. [Without legs, the seat is unsusceptible.]

עד שיהיו בו כעשיר – if it is from cloth – until it will be three-handbreadths by three-handbreadths square, according to the measurement of the defilement of a cloth for uncleanness through treading.

ונמדד כפול – three [handbreadths] in front of him, and three [handbreadths] in back of him, I is found that when he stretches it out, it is six [handbreadths] in length by three [handbreadths] in width square, and its length is double its width.