number - Shiv'a Vetish'im Umatayim?

Who knows two hundred ninety-seven?

?שבעה ותשעים ומאתים - מי יודע

In the spirit of the song "Echad", please post interesting and significant Jewish facts about the number 297.

I'm pretty sure there's no lazy gematria available for this one.

Check out mi-yodeya-series for the previous two hundred ninety-sixentries in this ongoing series.

Please include sources for your information wherever possible, as with all other answers on this site.

Answer

Section 297 of Yoreh De'ah (in Shulchan Aruch) is unusual in that there are two of them, one covering the laws of planting mixtures (kilayim) of plants other than grapevines, the other about the laws of crossbreeding animals.