Millim
Names
Tanna or Amora
explain this concept
why is there no problem when...
100

אזיל

went

100

רבי שמעון בן אלעזר holds...

you can keep things where the רבים are found

100

רב אמי

amora

100

בשר שנתעלם מן העין

meat that is hidden from the eye is forbidden becasue someone might have switched the meat

100

the bird picked up the meat (why no problem of בשר שנתעלם מן העין)

saw it the whole time

200

שוקא דגלדאי

the tanners market

200

Rebbi (something to do with trash and a house)

the shechted animal is forbidden when you find it in the trash and permitted when you find it in a house

200

רבי חנניא בנו של רבי יוחנן בן ברוקה

תנא

200

זוטו של ים

keep it even though theres a סימן and he says he doesnt give up 

200

shechted meat by ROV KNAANIM

b/c most shochtim are yisraelim

300

נעשה כצווח על ביתו שנפל

it's like one was screaming about his house that fell

300

Rav nachman (something to do with losers weepers)

even if a yisrael gives a siman by רוב כנענים you don't have to return it

300

אביי

אמורא

300

 (explain the halacha and the reason) רוב ישראל לענין שחיטה

muttar to keep and eat because likely shechted by yisrael 

300

find an object in the shuk and a yisrael gives a siman

it's rov knaanim and we dont believe him that he didn't give up

400

בשר שנתעלם מן העין אסור

meat that is hidden from the eye is forbidden

400

רבי שמעון בן אלעזר

תנא

400

אוקימתא

limitation of a case (not geshmak becasue changes simple meaning)

500

ושדייה בצנייתא דבי בר מריון

and it threw it between the palm trees of Bar Marion

500

רבי יוחנן

אמורא