Siman 525

We learn in Shabbat (148b): It was stated: A Yom Tov loan, meaning that he borrowed from him food or drink or other things needed for Yom Tov, Rava said: It is subject to claim in a beit din, for if not – they will not lend to him, and he will come to refrain from the joy of Yom Tov. Rav Yosef said: It is not subject to claim in a beit din, for if you say it is subject to claim – he will come to write. And how shall he act? He shall take a pledge from him. And between himself and the other he admits that it is subject to claim, and he may seize it from him. And if this one returns and takes it from him – they extract it from him in a beit din, for he has stolen from him, since he took it according to the law (Ran, see there). And the reasoning of Rava is that even though he can lend by means of a pledge, nevertheless perhaps he does not have a pledge, or he will not want to give a pledge, and he will be nullified from the joy of Yom Tov. And between himself and the other perhaps he will not have the ability to seize it from him, and based on this he also will not want to give.

And for the law, the Tosafot ruled like Rabbah, that it is permitted to be claimed in a beit din. And so too the Rambam in the fourth chapter, see there. But the Rif wrote two opinions: that there is one who ruled like Rabbah, and there is one who ruled like Rav Yosef. And even though the halacha follows Rabbah against Rav Yosef, the Rif's version of the text reads Rava, see there. And the Rif did not decide, and it is a wonder regarding the Tur who wrote that the Rif rules like Rav Yosef. And consequently, we hold that it is permitted to be claimed.

The Rambam wrote there: Charity collectors may collect from the courtyards on Yom Tov. However, they shall not announce it in the manner that they announce on a weekday; rather, they collect privately, and place it into their laps, and distribute it to each neighborhood individually. Thus far his words, and so wrote the Tur and the Shulchan Aruch. And it is from the Yerushalmi. And even though we announce regarding a matter of a mitzvah even on Shabbat, as I wrote in siman 306 – it is different here because it is possible to do it privately (Magen Avraham). And according to this, if it is impossible to do it privately – it is permitted publicly and with an announcement, so that because of this the poor shall not lack for the joy of Yom Tov.