Reference for Shabbat 122:3
לא קשיא הא למחויי גברא הא למחויי קמיעא
— There is no difficulty: the one is to approve the man; the other is to approve the amulet.<span class="x" onmousemove="('comment',' In order that the practitioner may rank as an expert, he must have healed three different men with three different amulets; these three men would be suffering from three diverse maladies, and the amulets likewise would be different, i.e., contain different charms. Whatever amulet he subsequently issues is approved. The second Baraitha must now accordingly be translated thus: What is an amulet of an approved person? (An amulet issued by) one who has healed three persons. But the first Baraitha refers to the approving of the amulet itself; once it has healed three times, whether the same person or three different persons suffering from the same complaint, it is now approved for all men. Or, the same charm can now be written by any man, and it is approved. ');"><sup>3</sup></span>