A khata, khada, khadag, or hada (Tibetan: ཁ་བཏགས་; Mongolian: хадаг [xɑtk]; is a traditional ceremonial scarf common in Tibetan and Mongolian culture. It symbolizes purity and compassion. It is usually made of silk. Tibetan khatas are usually whitesymbolising the pure heart of the giver, though it is quite common to find yellow gold khatas as well. Mongolian khadags are usually blue, symbolizing the sky.
Khatas can be presented at any festive occasions to a host or at weddings, funerals, births,graduations, arrivals and departure of guests etc. The Tibetans commonly give a kind acknowledgment of "Tashi Delek" (meaning good luck) at the time of presenting. The 14th Dalai Lama is known to offer khata as a gift to diplomats, visitors, or other monks, which symbolizes purity of intention and the beginning of the relationship.
In Mongolia, khadags are also often tied to ovoos, stupas or special trees and rocks.