Beit Shammai say: One may spread traps for an animal and birds and fish only if there is sufficient time remaining in the day for them to be trapped in them while it is still day, and Beit Hillel permit doing so even if there is not sufficient time remaining in the day.Beit Shammai nearly always rules more strictly than Beit Hillel - and Beit Hillel nearly always is the one whose arguments win in Jewish law.
----
The Islamic story gets Jewish law exactly wrong. Placing the nets is acceptable in Jewish law as interpreted by the Talmud.
The early Islamists knew the Talmud, as is evidenced from the many Talmudic legends that made it into the Quran.
So this story is indeed an antisemitic story, but it goes beyond that - it is apparently an attack on the Talmudic system of jurisprudence, where lenient opinions are often accepted as mainstream. Islamic scholars were seemingly aghast at the idea of "loopholes" in Jewish law provided by the Talmud, and this story is a way for them to assert themselves morally superior not only to Jews, but specifically to the Jews who follow Talmudic law - which is what all normative Jews follow.
When Muslims complain about "Talmudic rituals" today, it might not be a recent phenomenon. It is possible that Muslims felt threatened by the Talmud from their beginnings, which came after the Talmud was completed.
(full article online)
Muslim legend of Jews turning into apes and pigs: an anti-Talmud story? ~ Elder Of Ziyon - Israel News