Genesis 32:14

In order to secure peace and avoid a conflict, Yaakov was willing to give Esau “that which he had in his hand,” i.e., physical property like gold, jewels and cattle. Rabbi Joseph B. Soloveitchik points out that Yaakov was not, however, willing to negotiate with any of his spiritual possessions. Such things as Torah and mitzvos are “off the table” when it comes time to negotiate with those who would just as soon see us destroyed. (From Days of Deliverance, cited in the Mesoras HaRav Chumash.)