This article, Welcoming Approach: Thousand-Armed Murder, contains content taken directly from our mother site. All credit of such content is reserved the original authors over at Narutopedia, the original article can be read here: "Welcoming Approach: Thousand-Armed Murder" .
Kakuzu called this technique "a gift of the gods". This jutsu is activated by Chiriku using his left hand to make a half-ram and extending his right hand down with his palm parallel to the ground. Music starts playing as Chiriku summons the spirit of Amida. The spirit seems to envelop Chiriku and react to his emotions. The spirit is normally calm and both angelic and peaceful looking, but whenever Chiriku gets angry, the spirit turns red and transforms into a somewhat demonic-looking creature. Amida then attacks Chiriku's target with its 1000 spirit fists. The fists attack at such a high speed and number, it seems almost impossible to block. He uses this technique against Kakuzu and Hidan when they attacked the Fire Temple.
Asuma is shown able to use this technique; although not as effective as Chiriku's.
The monks of In'ei Temple inherited this ability from their founder, Hozoin In'ei, who at one point was a monk of the Fire Temple. They have further mastered the ability, and have developed other stances other than the traditional one to access this technique. The monks of In'ei Temple can utilize this ability by forming a unique sign with two, or even one hand and can continue to move while the activate the ability.