Kaupina is the Sanskrit

Sanskrit

Sanskrit , is a historical Indo-Aryan language and the primary liturgical language of Hinduism, Jainism and Buddhism.Buddhism: besides Pali, see Buddhist Hybrid Sanskrit Today, it is listed as one of the 22 scheduled languages of India and is an official language of the state of Uttarakhand...

 name for an India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n form of male

Male

Male refers to the biological sex of an organism, or part of an organism, which produces small mobile gametes, called spermatozoa. Each spermatozoon can fuse with a larger female gamete or ovum, in the process of fertilization...

 underclothing. It is often translated as loincloth

Loincloth

A loincloth is a one-piece male garment, sometimes kept in place by a belt, which covers the genitals and, at least partially, the buttocks.-History and types:Loincloths are being and have been worn:*in societies where no other clothing is needed or wanted...

. In form, it is a rectangular piece of cloth with a horizontal

Horizontal plane

In geometry, physics, astronomy, geography, and related sciences, a plane is said to be horizontal at a given point if it is perpendicular to the gradient of the gravity field at that point— in other words, if apparent gravity makes a plumb bob hang perpendicular to the plane at that point.In...

 thread at one end for binding it around the waist of the wearer. It has religious significance attached to asceticism

Asceticism

Asceticism describes a lifestyle characterized by abstinence from various sorts of worldly pleasures often with the aim of pursuing religious and spiritual goals...

 for the Hindu

Hindu

Hindu refers to an identity associated with the philosophical, religious and cultural systems that are indigenous to the Indian subcontinent. As used in the Constitution of India, the word "Hindu" is also attributed to all persons professing any Indian religion...

s. Bhagavata Purana

Bhagavata purana

The Bhāgavata Purāṇa is one of the "Maha" Puranic texts of Hindu literature, with its primary focus on bhakti to the incarnations of Vishnu, particularly Krishna...

 enjoins that a true ascetic shouldn't wear anything other than a kaupina . Sri Shankaracharya composed a verse

Verse (poetry)

A verse is formally a single line in a metrical composition, e.g. poetry. However, the word has come to represent any division or grouping of words in such a composition, which traditionally had been referred to as a stanza....

 called Kaupina Panchakam to assert the significance of asceticism.