(Chinese and Japanese phonetic translations: 烏枢沙摩明王, 烏枢瑟摩明王, 烏瑟沙摩明王 or 烏芻沙摩明王, Japanese: Ususama Myōō; Chinese significant name: 除穢金剛 Chúhuì Jīngāng, lit. Vajra purifying the unclean) is a vidyaraja (wisdom king) in the Vajrayana sect of Buddhism. He is also known by various other names such as Burning Impurity Kongo, Jusoku Kongo (受触金剛) and Kazu Kongo (火頭金剛).

His full name is Great Strength Furious Diamond Ucchuṣma, in Sanskrit “Vajra Krodha Mahābala Ucchuṣma”, in Chinese 大力威怒金刚烏芻使摩 (Dàlì wēinù jīngāng Wūchúshǐmó), from the Chinese version of the Sūtra of Mahābala and the Tibetan version of the Ārya Mahābala-Nāma-Mahāyāna Sūtra.

In Japan, Ucchuṣma is a guardian of the bathroom, where his effigy is often present. He is known to the general public for his powers of purification of the unclean, in particular in respect to sexual diseases.

The Ucchusma Vajrapala Sutra asserts that the Ucchusma Vajra is actually the Vajra manifestation of Shakyamuni Buddha. Legend has it that when Shakyamuni Buddha was about to enter into Nirvana, all heavenly beings, with the exception of the ‘Spiral Hair-knot Brahma King’, came to pay their respect to Buddha. The Brahman King was in fact enjoying himself with the heavenly maidens in his own celestial palace. The heavenly gods, being unhappy with the arrogance of the Brahma King, went to his abode and try to persuade him to attend the Dharma assembly. Upon reaching his palace however, the gods found themselves trapped in the defiled energy cast by the supernatural powers of the king. Even some of the Vajra Deities 金刚神 who were later sent to apprehend the Brahman King were imprisoned by the foul forces as well.

When Shakyamuni Buddha came to learn of this, He employed His Origin Wisdom, and the Light of Perpetual Joy and Pliancy was emitted from His heart. The Ucchusma Vajrapala 秽迹金刚 soon appeared from amidst the revolving radiance of the Buddha’s heart, and ascended to the celestial palace of the Brahma King. Despite the defiled energy hurled at Him by the Brahman King, the Ucchusma Deity was unharmed as He immediately turned these forces of contamination into ordinary soil. In no time, the Brahma King was subdued and brought to the feet of Shakyamuni Buddha. For this reason, the Ucchusma Deity is also known as the ‘Filth-eliminating Vajrapala’ 不净金刚.