Page "Judaism" Paragraph 125

Jewish law also forbids the consumption of meat and dairy products together.

The waiting period between eating meat and eating dairy varies by the order in which they are consumed and by community, and can extend for up to six hours.

Based on the Biblical injunction against cooking a kid in its mother's milk, this rule is mostly derived from the Oral Torah, the Talmud and Rabbinic law.

Chicken and other kosher birds are considered the same as meat under the laws of kashrut, but the prohibition is Rabbinic, not Biblical.