Kusha (Sanskrit: कुश) also known as Darbha (Sanskrit: दर्भ) and Pavitram (Sanskrit: पवित्रम्), are the Sanskrit terms for Desmostachya bipinnata grass. This grass is of literary and ritual significance in Hinduism.[1]
In the performance of Vedic rituals such as the homa and tarpana, the kusha grass is shaped like a ring and is worn by a priest on the ring finger of his right hand.[2] The auspicious day for uprooting the sacred grass Kusha is the amavasya day of Bhadrapada month in Hinduism called as Kusha Amavasya.[3]