a deal with no kinyan, when can a person back out

1. two people agree on a deal with words only, no kinyan, nothing signed. the gemara in bava metzia 49a says that without a formal act of acquisition the deal did not close, but one who reneges on his commitment, the sages are displeased with him, and it invokes the...

mekach ta’ut, when does a hidden defect cancel a sale

1. how does mekach ta’ut work in modern purchases? the shulchan aruch in choshen mishpat 228:6 paskens that if an item has a defect the seller must inform the buyer. but when does an undisclosed defect actually cancel the whole sale? does the defect have to make...