Negaim 12:3 - 12:4

עד שיראה כשני גריסים – as it is written (Leviticus 14:37): "וראה את-הנגע והנה הנגע בקירת הבית"/ “If, when he examines the plague, the plague in the walls of the house,” it teaches that the it is not the plagues of plagues of the house do not make it susceptible to uncleanness, until there will appear like [the size of] two split [Cilician] beans.

או על אבל אחת – and that is the reason that Rabbi Yishmael stated four stones, for the four walls of the house, for each wall has one stone. But for Rabbi Akiba who stated, until that there should appear like [the size of] two split [Cilician] beans on two stones, not on one stone, for not less than eight stones, as each wall has two stones.

רבי אליעזר בר' שמעון אומר כו' – the reason of Rabbi Eliezer the son of Rabbi Shimon [Tractate Sanhedrin 71a] as it is written (Leviticus 14:37): "קיר" (i.e., "ומראיהן שפל מן-הקיר"/that appear to go deep in the wall) and it is written (Leviticus 14:37): "קירות" (i.e., "והנה הנגע בקירת הבית" /the plague in the walls of the house is found), What is a wall that is like multiple walls? He would say that this the corner, and in each wall, we require the measure of a plague, and that is like the split [Cilician] bean squared on each one. But the Halakha is according to Rabbi Akiba.

עצים – as we have stated (see Mishnah 2 of this chapter, that a house is not susceptible to be unclean until it has wood in it, how much [wood] will be in each and every wall. כדי ליתן תחת השקוף (as much wood as is needed to place under an arch/lintel – to keep it in shape)- thus it needs for each and every wall.

שקוף – place that the door arches/bends upon it, and they regularly place wood under it.

סנדל לאחורי השקוף – the regularly place wood for the back of the lintel to protect it, and it is called aסנדל /sandal [support] , like that the sandal protects/supports the foot. שקוף/arch or lintel, is called whether of the opening [of the house] or the window.

פצים (boards – the board nailed against the wall to form a door-frame/door-post) – it the language of chips and tears. Like (Psalms 60:4): “You have made the land quake; You have torn it open.”/"הרעשתה ארץ פצמתה".

קירות האבוס (walls of cattle stall) – of cattle.

וקירות המחיצה – of [courtyards), gardens and orchards.

אין מיטמאין בנגעים – as it is written (Leviticus 14:37): "בקירת-הבית"/in the walls of the house, but not the walls of the cattle stall nor the walls of the partition.

ירושלים וחוצה לארץ אינן מיטמאין בנגעים – as it is written (Leviticus 14:34): "בבית ארץ אחוזתכם"/in the land you possess, but outside the Land is not your possession, and Jerusalem also was not divided among the tribes.