"He who passes his son and his daughter through the fire." I have here only his son and his daughter; whence his son's son and his daughter's son? Scripture teaches, saying, "for he has given of his seed to Molech" (Leviticus 20:3) — in any case. And he is not liable until he passes him in the manner of "passing over"; and if he passed him on foot, he is not liable. And he is not liable for his father, nor for his mother, nor for his brother, and not for his sister; and if he passed himself over, he is exempt. "One who practices divinations." Like the matter that the men of Midian did, "and divinations were in their hand" (Numbers 22:7). "A soothsayer." This is the one who catches the eyes. "An augur." This is the one who says: his bread has fallen from his mouth, his staff has fallen from his hand, his son calls to him from behind him, a raven calls to him, a deer has cut across his path, a snake is at his right, a fox at his left, "Do not begin this work — it is morning, it is the New Moon, it is the Sabbath." And some say: this is the one who augurs by the weasel, by birds, and by fish.
Midrash Aggadah on Molech, Diviners, and Augurs in Deuteronomy
Midrash Aggadah, Deuteronomy 18:10
מעביר בנו ובתו באש. אין לי אלא בנו ובתו, בן בנו ובן בתו מנין, תלמוד לומר כי מזרעו נתן למולך מכל מקום, ואינו חייב עד שיעבירנו דרך העברה, ואם העבירו ברגל אינו חייב על אביו ואמו ועל אחיו ולא על אחותו, ואם העביר עצמו פטור: קסם קסמים. כענין שעשו אנשי מדין, וקסמים בידם (במדבר כ"ב ז'): מעונן. זה האוחז את העינים: מנחש. זה האומר פתו נפלה מפיו, מקלו נפלה מידו, בנו קורא לו מאחוריו, עורב קורא אליו, צבי הפסיקו בדרכו, נחש מימינו שועל משמאלו. אל תתחילו בזאת המלאכה, שחרית הוא, ראש חדש הוא, שבת הוא: ויש אומרים זה המנחש בחולדה בעופות ובדגים: