Chukat, HuQath , Hukath, or Chukkas (חֻקַּת —Hebrew for "decree," the ninth word, and the first distinctive word, in the parashah) is the 39th weekly Torah portion (פָּרָשָׁה, parashah) in the annual Jewish cycle of Torah reading and the sixth in the Book of Numbers. The parashah sets out the laws of corpse contamination (tumat hamet) and purification with the water of lustration prepared with the Red Cow (פָרָה אֲדֻמָּה, parah adumah, also called the "Red Heifer"). It also reports the deaths of Miriam and Aaron, the failure of Moses at the Waters of Meribah, and the conquest of Arad, the Amorites, and Bashan.
(summary from Wikipedia.org)