Yosef Karo

“ Paragraph 31- When does repentance for those that train birds occur? Once they break the vessels they use to trap the birds and perform a complete repentance and commit not to do trap again- even in the desert. ”

“ In sum, any scholar is assumed to be valid until he is disqualified and any ignoramus is assumed to be invalid until he is established as someone who goes in the right path. Anyone who accepts the testimony of an ignoramus before he is established as going in the right path or before witnesses come and testify that he keeps the mitzvos and is civilized, is a fool and will have to answer for his actions in the future because he is destroying Jewish money based on the words of the wicked.
Paragraph 18- Low-lives are rabbinically disqualified from testifying. ”

“ They cannot just repent with words. They must write, “I so and so the son of so and so, gathered 200 zuz of shmitah fruits and I am giving them away as a gift to the poor.”
Paragraph 33- When does repentance of one that committed a sin with an oath occur? Once he comes to a court that does not recognize him and says “I am suspect” or when he is obligated to take an oath in a court that does not recognize him for a significant sum of money and he chooses to pay and not take the oath. ”

“ This all applies to witnesses that already saw the incident and are obligated to testify just as a person is obligated to judge between two litigants. However, it is permitted for someone who is not required to testify to accept payment to go and see the future incident. If a judge already ruled and a party brings him a gift for advocating for him, he is prohibited from accepting the gift. Anything a person testifies because of fear of pain has no substance.
Paragraph 19- A gentile and slave are disqualified from testifying. ”

“ Similarly, one who consistently plays with stones or becomes a tax collector or a collector that adds for himself, the witnesses must inform him that anyone that does this is disqualified from testifying because most people don’t know these things. ”

“ Similarly, this does not only apply to birds but even to those that play with domesticated animals, wild animals and any type of birds and say whoever’s comes first or defeats its opponent will receive double. ”

“ These are people who walk and eat in the market in front of everyone. People like this go naked in the market when they are working on a disgusting matter or something similar in that they do not have any shame and are considered like dogs and do not care about testifying falsely. ”