Very quickly review “גמרא דף כו. “וכן שמעתי (two dots – four lines from bottom of the Amud) until “כמאן אזלא
The Mishna teaches us that if a Jew did not participate in the Eruv Chatzeros he can be מבטל- relinquish his rights in the Chatzer and thereby permit everyone to carry from their homes to the chatzer.
In case where the person is only מבטל his rights in the courtyard. The מבטל is permitted to carry items from the other residents houses to the courtyard. However he is not allowed to carry items from his own house to the courtyard.
Why?
Learn רש”י
Learn רבינו יהונתן who gives a different explanation than Rashi
https://hebrewbooks.org/pdfpager.aspx?req=37954&st=&pgnum=348
If the other residents of the courtyard made a Chazaka after the person was מבטל his rights in the courtyard. May he now carry from his house into the courtyard?
Learn ריטב”א
https://hebrewbooks.org/pdfpager.aspx?req=9610&st=&pgnum=150
Learn רשב”א who brings a different reason from the ראב”ד why the מבטל is not allowed to carry items from his own house to the courtyard.
https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=30
How do we conclude l’halacha?
Learn שולחן ערוך ס’ ש”פ סע’ א and the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=111
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=112
In case where the person is also מבטל his rights in his house in addition to the courtyard. Is the מבטל permitted to carry items from his own house to the courtyard? Why or why not?
Does it matter if the other residents made a chazaka in the courtyard?
Learn שולחן ערוך ס’ ש”פ סע’ ב and the משנה ברורה
Can the מבטל carry items from the other residents homes to the courtyard before they made a chazaka in the courtyard?
See ביאור הלכה “וגם