Reference for Yoma 112:3

אלא מדתני איו דתני איו ר' יהודה אומר אין אדם מתנה על שני דברים כאחד

Perhaps the matter is different there, as the motive is taught there: They said to R'Meir: Don't you admit that if the bottle burst he would be found retrospectively to have drunk untithed wine?

Jastrow