In Bharatanatyam, it is known as the "pataka hasta" and is formed by joining the tips of the thumb, index, and middle fingers together while keeping the other two fingers straight. It is often used to represent the lotus flower or to convey emotions such as joy, happiness, or love.
In Kathak, samyuta hastas is known as the "tripataka hasta" and is formed in the same way as the pataka hasta in Bharatanatyam. It is also used to represent the lotus flower and is often used in devotional dance pieces.
Both Bharatanatyam and Kathak are classical Indian dance forms that have their own distinct styles and techniques. While samyuta hastas is used in both dances, it may be performed slightly differently and have different interpretations depending on the specific dance style and context in which it is used.