Bechoros 42

Maeser behaima where it's noheg,why we don't do it bzman hazeh,and how we know you don't have to maeser kodshim kalim

Bechor and others who only can claim not shvach or non muchzak assets and a 3 way machlokes on what goes back byovel 

Machlokes Rebi and the rabanan if you can be podeh pidyon habein with karka and avadim,when rebi says klal uprat uklal,and Reb Tarfon returning the pidyon money

What the real value of the 5 slayim is that we use to do pidyon habein 

If a Bchor dies on day 30 what's the Halacha in regards to giving pidyon and if the father never had a pidyon who comes first him or his son

When the child dies or the father dies or children get mixed up and it's unclear who and if there's a bechor what's the din with the five slayim

Machlokes Reb yochanan and Reish Lakish when somebdoy has kids when he's a goy and then becomes a ger does he's he have a mitzvah pru urban is there pi shnyaim,a Liviyas son being patur from pidyon,a kohen that dies leaving over a chalal is he chayiv in pidyon and dinei bchor after a miscarriage 

Different categories of bechor and when they have bechor kohen and nachla and what's the Halacha if a forehead comes out is it take away bchor nachala from the next child

Many more mumin for a kohen including ones that have to do with the feet and extra fingers and toes 

Many cases of mumin that pasul a kohen from avodah in his nose,eyes,and his makom zachrus