A khakkhara (khakkhara; ; ), sometimes referred to in English as a pewter staff, is a staff topped with metal rings traditionally carried by Buddhist monks, particularly in East Asian Buddhism. Originally used as a noisemaker to announce a monk's presence and frighten away animals, it was adapted for use as a rhythmic instrument during chanting and sutra recitation, and for use as a weapon. It is also known as a "tiger pewter staff" (虎錫), due to its traditional use of driving away predatory animals. The earliest recorded description of a khakkhara is in the writings of the Chinese pilgrim monk Yi Jing who traveled between China, Indonesia, and India in the years 671 to 695 AD. The basic design of a khakkhara is of a central staff, normally in wood, topped by a finial in metal, with a looped design, from which smaller metal rings hang on each side (similar to the stringing of traditional Chinese cash). Various numbers of loops and rings are employed, with each number being assigned symbolic significance on the basis of a variety of Buddhist numerical formulas. Historical examples from the Famen Temple include staffs with one, two, or four loops and four, six, or twelve rings on each loop. Several versions of the staff's origin are given in the Sarvastivada vinaya, but in all of them the staff is recommended to monks by the Buddha in order to ward off animals- either for protection from dangerous predatory animals like tigers and lions, or for scaring off small creatures like spiders and snakes that might be trod on by wandering monks. The ringing of the staff can also alert donors within earshot of the monk's presence, as monks traditionally remain silent while collecting alms. In the Mahayana sutra known as the Pewter Staff Sutra (得道梯橙錫杖經), the Buddha instructed his monks that they should have one of these staffs, because the Buddhas of the past, present and future also kept such a staff. According to the Record of Buddhistic Kingdoms by Faxian, the capital city of Nagara, once had a vihara that held the staff that belonged to the Buddha.