Vimalaprabhasa

Vimalaprabhā (विमलप्रभा) refers to the commentary on the Kālacakratantra, the famous Tantra of the Buddhists which introduces the cult of Kālacakra into Buddhism.—Vimalaprabhā is the commentary on the Kālacakratantra which is referred to in the Niṣpannayogāvalī. It is thus probable that the cult of Kālacakra came into vogue in the 10th century. According to the Kālacakratantra, the cult was given the name of Ādibuddhayāna or Ādiyāna. From the Vimalaprabhā it is evident that by introducing the worship of Kālacakra, the circle of time, an attempt was made to bring the warring communities of the Hindus and the Buddhists under the same banner, and unite them against the cultural penetration of the Mlecchas from the Western borders of India where the followers of Islam were daily growing strong and were destroying old and ancient civilizations.

Vimalaprabhā (विमलप्रभा) is an eleventh-century commentary on the Kālacakratantra.—The Vimalaprabhā explains the term haṭhayoga as the name of a type of yoga that forces prāṇa (‘vitality’) into the central channel through a practice involving nāda (‘internal resonance’) and retention of bindu (‘generative fluids’).

Vimalaprabha (विमलप्रभ, “pure light”) refers to one of the “four concentrations” (samādhi) as defined in the Dharma-saṃgraha (section 136). The Dharma-samgraha (Dharmasangraha) is an extensive glossary of Buddhist technical terms in Sanskrit (e.g., vimala-prabha). The work is attributed to Nagarjuna who lived around the 2nd century A.D