Rabbis at the Scientific and Technologic Institute for Halacha in Jerusalem issued a ruling on the use of spinners on Shabbat after noticing children playing with the toys and learning tools, Ynet reported Wednesday.

The rabbis at the institute determined the movement of the spinners does not violate the laws of Shabbat unless the spinner has lights that are triggered by the movement of the spinner.

They suggested, however, that children do not bring the spinners to synagogue services on Shabbat “in order not to harm the sanctity of the place, and certainly they must be careful not to play it during prayer and the reading of the Torah.”

The rabbis also said children should not take the spinners out during classes at school. Playing with spinners during lessons “is disrespectful and disdainful of both the material and the rabbis and teachers.”

The inventor of the ubiquitous stress-reducing toy said she came up with the idea during a trip to Israel in the 1980s, during the first intifada, as a way to distract the “young boys throwing rocks at police officers.”