Sadhu, Varanasi. In Hinduism, a sādhu (good man, holy man) is a religious ascetic or holy person. Although the vast majority of sādhus are yogīs, not all yogīs are sādhus. The sādhu is solely dedicated to achieving mokṣa (liberation), the fourth and final aśrama (stage of life), through meditation and contemplation of brahman. Sādhus often wear saffron-coloured clothing, symbolising their sanyāsa (renunciation).