Shaucha (Sanskrit: शौच, also spelled Saucha, Śauca) literally means purity, cleanliness and clearness. It refers to purity of mind, speech and body. Saucha is one of the Niyamas of Yoga.
Shaucha, cleanliness, is the first niyama. Not only external cleanliness, like having a shower, brushing your teeth, etc., but purity of actions, purity of mind from evil and distracting, unnecessary thoughts and from bad, haunting memories.
Shaucha: purity of body and mind (2.40, 2.41)
Santosha: contentment (2.42)
Tapah: training the senses, austerities, ascesis (2.43)
Svadhyaya: self-study, reflection on sacred words (2.44) ...
Shaucha - Purifying body, mind, and spirit
Samtosha - Contentment, cultivating the inner joys shich come with freedom from desire
Tapas - Self-discipline, developing a strong will, training the habits of body and mind
Svadhyaya - Self-study ...
Shaucha (purification) is a central aim of many yogic techniques, and is the first principle of Patanjali's five Niyamas.
The Niyamas are:
1. Shaucha: Purity or Cleanliness
2. Santosa: Contentment
3. Tapas: Self-discipline or burning spiritual desire
4. Svadyaya: Self-study or contemplation
5. Ishvara Pranidhana: Surrender to the Absolute.
See also: What is the meaning of Yoga, Shauch, Niyama, Mind, Yamas?