Midrash for Sanhedrin 129:15

כי קאמר ר"ל נמי לר"ע אבל לרבנן לא

Abaye said to him: But burning incense as a charm is to act as a charmer, which is merely prohibited by a negative precept? — That is so, but the Torah decreed that such a charmer is stoned.<span class="x" onmousemove="('comment',' Consequently, for unwitting transgression a sin offering is due. But the charmer who is punished by lashes is one who charms animals by bringing them together. ');">¹⁴</span>

Sifrei Devarim