Someone prohibited by a neder to benefit from another shall not lend him, nor shall he borrow from him; he shall not lend him money, nor shall he borrow money from him; he shall not sell to him, nor shall he buy from him.  He said to him: “Lend me your vow.” He responded: “It is not available.” He said: “Konam, my field with respect to ever plowing [it] with it.” If it was his practice to plow, he is forbidden, but other people are permitted; if it is not his practice to plow, he and all [other] people are forbidden.