In Unani medicine, Tabiyat is considered the natural power or innate force in the human body responsible for maintaining balance and harmony.
The primary function (Feal) of Tabiyat is to maintain the temperament (Mizaj) in a balanced state.
This process is known as Ta’deel-e-Mizaj, which means moderation or balancing of temperament.
Muharik-e-Mizaj means stimulating the temperament, Tabreed-e-Mizaj means cooling the temperament, and Taskeen-e-Mizaj means calming the temperament.
These may be actions taken by drugs or interventions, but the main natural function of Tabiyat itself is always Ta’deel-e-Mizaj — to keep the body’s temperament balanced.
Therefore, the correct answer is Ta’deel-e-Mizaj.