By a slave of two partners and according to everyone - בעבד של שני שותפין ודברי הכל
Summary:
The restriction of ר"א regarding 'המיוחד לו', is only if one owns קנין הגוף and the other קנין פירות, but not if they are שותפין in both. A שטר שחרור, however is effective to remove איסור but not ממון.
Here is where he said; half – half - הא דאמר חצי חצי
Summary:
רש"י maintains that the reason they are not קונה by חצי is because it may be the same חצי. According to the ר"ש they are not קונה even if it is a different חצי, since כל שאין בזה אח"ז אפי' בב"א אין. The difficulty with this is why are they קונה by כולו. There is a need to differentiate between קידושין and ממון which is divisible.
