From Wiki: Hashish, often known as "hash", is a cannabis preparation composed of compressed stalked resin glands, called trichomes, collected from the unfertilized buds of the cannabis plant. It contains the same active ingredients but in higher concentrations than unsifted buds or leaves. Hashish is often a paste-like substance with varying hardness and pliability, its color most commonly light to dark brown but varying toward green, yellow, black or red.[citation needed]
Hash is a drug that comes from cannabis, the same plant as marijuana, so half the plant can be used for weed, and the other half for hash. People would get in organized groups, smoke hash, and just go out and kill. they were called Hassassins, or followers of hash. They formed the modern day word assassin.