Reference for Nedarim 104:8

אמר רבא ת"ש קונם פירות האלו עלי קונם הן לפי אסור בחילופיהן ובגידוליהן הא ביוצא מהן מותר

'Be they konam to my mouth,' he is forbidden [to benefit] from what is exchanged for them or what grows of their seeds. This implies that he may benefit from their juice!<span class="x" onmousemove="('comment',' Though he said 'these'. This proves that the essential clause in the Mishnah is 'that I taste not'. ');">⁵</span>

Jastrow