Final answer:
The traditional funeral ritual involving a Buddhist priest instructing the spirit to begin its journey to the land of the dead is associated with Buddhism.
Step-by-step explanation:
The traditional funeral ritual described in the question, where a Buddhist priest instructs the spirit of the deceased to begin its journey to the land of the dead, belongs to Buddhism. In the context of multiple religions and their funeral rituals, it is important to note that such practices vary greatly. For example, Hindus generally practice ritual cremation often on the Ganges River in India, while Abrahamic faiths such as Christianity and Islam traditionally bury their deceased, facing specific directions to align with their religious beliefs. The funeral ritual involving a Buddhist priest is a part of the Buddhist traditions, which focus on the cycle of rebirth and the passing of the spirit into the next life.