Sooraj lagan mein maathe pe paseena hota hai, gar na ho aisa toh Shani kameena hota hai.
With Sun in the Ascendant, there is sweat on the forehead; if it is not so, then Saturn is wicked/afflicted.
The 1st house (Lagan) is the throne of the Sun (Surya). The forehead is physically ruled by the 1st house and the Sun.
Dr. Sharma explains that when the fiery Sun sits in the 1st house, it naturally generates heat, causing the person to frequently sweat on their forehead ("maathe pe paseena"). This is a healthy sign that the Sun is active and powerful.
However, if a person has Sun in the 1st house but *never* sweats on their forehead, it is a massive red flag! It means the cold, restrictive energy of a negative Saturn ("Shani kameena") is blocking the Sun's power, leading to hidden diseases, loss of respect, and career stagnation.