To make someone tell the truth
If you suspect someone is a liar but are not sure, get a purple candle and dress it with Compelling oil. Write the person's name on a piece of parchment paper nine times and cross and cover that name with your name nine times. Place the paper under the candle and burn it for seven days while the moon is waxing. Each night you light it, call the person's name and say,
"I compell you to ell me the truth!"
On the seventh night wrap the left-over candle wax in the paper and throw it in running water or at a crossroads. He/she will be compelled to tell the truth then and may confess to many lies.