פירוש על בכורות 7:6

המקיש בקרסוליו – that his knees are curved outwardly and his ankles inwardly and they strike against each other when he walks. Or he strikes with his knees -this is the opposite, that his legs are curved towards the outside and they are distanced from each other until that his [curved] knees are above towards the inside, striking each other.

If one knocks his ankles [against each other, in walking] or rubs his legs [against each other]; a ba’al pikah and an ikkel. What is an ikkel? One whose knees do not touch each other when he puts his feet together.
If he has a lump protruding from his thumb, or if his heel projects backward, or if his feet are wide like those of a goose.
Or if his fingers lie one above the other.
If they are webbed up to the joint, he is fit, if below the root, if he cuts it, he is also fit.
If he has an additional finger and he cut it off, if there was a bone in it, he is unfit, but if not, he is fit.
If he has additional fingers and additional toes, on each hand and foot six fingers and six toes, [making altogether] twenty-four [fingers and toes]: Rabbi Judah declares him fit, But the sages declare him unfit.
One who has equal strength in both hands: Rabbi declares him unfit; But the sages declare him fit.
A kushi, a gihur, a lavkan, a kippeah, a dwarf, a deaf-mute, an imbecile, one intoxicated, or afflicted with plague marks which are clean – [these defects] disqualify in human beings but not in animals.
Rabban Shimon ben Gamaliel says: a mad animal is not a choice sacrifice.
Rabbi Eliezer says: also those afflicted with dangling warts they are unfit in human beings but are fit in animals.
Section one: This section has to do with various unusual ways of walking.
Section two: A “lump” seems to be an extra appendage sticking out of either his thumb or big toe.
Section four: If his fingers are webbed, but only up to the middle joint, he is still fit. If they are webbed past the middle joint, he is still fit if he cuts the skin (ouch!).
Section five: If he had an extra finger that had a bone in it, he is unfit, even if he cut off the extra finger (double ouch!). If there was no bone in it, then he is fit, as long as he cuts it off.
Section six: According to II Samuel 21:20, Goliath had an extra digit on each hand and foot. Perhaps this leads Rabbi Judah to say that as long as the number of digits on each hand and foot is the same, he is not defective and can serve in the Temple. The other rabbis disagree. Just as someone with one extra finger or toe is disqualified, so too is one with an extra digit on each hand and foot.
Section seven: The rabbis considered left-handedness to be a weakness, as did pretty much everybody in the ancient world. Rabbi [Judah Ha-Nasi] thought that someone ambidextrous was simply weak in the right hand, and therefore, he was flawed. The other rabbis attributed this ability to the strength of the left and not the weakness of the right, and therefore, held that he could serve in the Temple.
Section eight: A “kushi” is a dark-skinned person. A “gihor” is a red-skinned person. A “lavkan” is an albino. A “kipeah” is a very tall and thin person. All of the types of people listed in this section cannot serve in the Temple because they are unusual and were therefore were considered to be in some way defective.
The inclusion here of a drunken priest and a priest afflicted with a plague, albeit one considered ritually clean, is exceptional for two reasons. First of all, drunkenness and being afflicted with plagues are temporary conditions, whereas the other conditions are permanent. Second, and more importantly, all of the other categories refer to priests with blemishes in their personal appearance, whereas drunkenness is not. It seems likely that the mishnah included these two categories here because they belong with the list of things that disqualify a human being but not an animal.
Section nine: According to Rabban Shimon ben Gamaliel, a mad animal may also not be offered as a sacrifice.
Section ten: Rabbi Eliezer adds in another blemish which disqualifies human beings from serving, but not animals from being sacrificed hanging warts (yick!).

בעל הפיקין והעיקל (swellings and bandy-legged) – and he explains עיקל/bandy-legged in the first clause [of the Mishnah].

כל שהוא מקיף פרסותיו – when he sits and brings close the soles of his feet one to the other.

ואין ארכובותיו נוגעות זו לזו – that they are curved towards the outside. And someone who has swelling/a lump that the swelling goes out from his great toe, a piece of flesh is round like a swelling/lump goes out from the thumb of his hand or from the great toe of his foot.

עקבו יוצא מאחוריו (his heel juts outward) – as for example, that his foreleg stands in the middle of his foot, that half of his foot is towards the inside and half of his foot is towards the outside/back.

רחבות בשל אווז – they are weekend like that of a goose and their length is not not greater than their width.

קלוטות – attached to each other (i.e., webbed)

עד הפרק – the middle [joint] of the toes.

למטה מן הפרק – that is to say, to the side of the nail that is entirely attached.

וחתכן- that they will be separated/divided, it is kosher/appropriate.

היתה בו יתירה – an extra toe.

אם יש בה עצם פסול – for since he severed it, it is lacing a limb that is found in it.

שש ושש עשרים וארבע – meaning to say, even if the fingers of his hand and the toes of his foot were equivalent, that on each hand and foot there are six [digits] apiece, even so, the Sages disqualify it. And all the more so if there were on one of its hands five [digits] and in the other hand six [digits], that is an even greater blemish. And the Halakha is according to the Sages.

השולט בשתי ידיו רבי פוסל – for he holds the weakness that he was born with was in his right hand.

וחכמים מכשירין – they hold that he has (unusual) strength which happened to rest in the left hand (see Talmud Bekhorot 45b). And the Halakha is according to the Sages.

הכושי – the black [person].

הגיחור (red-spotted in the face) – red like a purple garment.

הלבקן – extremely white (i.e., albino)

והקפה – long and thin, that is not thick according to its length, and he is ugly and reprehensible.

והשכור – but not from wine, it is considered like a blemish from the greatest blemishes in a person, for if he performed Divine Service, he is flogged, and his Divine Service is not desecrated. But the drunkard from wine and alcohol, if he served, he has profaned/caused the loss of priestly status. For in the portion of those who drink wine it is written (Leviticus 10:10): “for you must distinguish between the sacred and the profane,” and someone who is drunk of our Mishnah is not one other than having drunk a great deal of wine or much honey, or that ate cakes of twisted pressed figs, and his mind became confused. These are considered like having blemishes and they do not profane the Divine Service.

ובעלי נגעים טהורים – as for example (Leviticus 13:39): “it is a tetter broken out on the skin” or (Leviticus 13:13): “for he has turned all white.” For if it was from impure Negaim/plagues (or suspected leprosy), it is not necessary to state it, for even with his entrance into the temple courtyard, he is liable for extirpation.

דלדוליו (persons or animals afflicted with large warts) – like pieces of flesh that come out and suspend in them. And the Halakha is according to Rabbi Eliezer ben Yaakov.