When we give water to the sun by raising both our hands towards Sun, a very thin flow of water falls from the Lota (Type of Utensil), then the sun rays directly falls on the water and through the principle of refraction and reflection, 7 forms of light gets extracted from the natural sunlight, finally gets absorbed by our body, which is very helpful for increasing our brain power , Memory power , concentration and intellectual power. It also improves eyesight, lustre and increase vigor due to effect of 7 different scattered coloured lights because every scattered light makes different effects on various energy points in our body.
It is scientifically proved that the early morning sun rays are good for the human being. According to Ayurveda, human body is made up of five things, air (vayu), water (jal), earth (prithvi), fire (energy) and space (aakash) and the cure of all the ailments of the body is amongst these five things only and the rays of the rising sun are one of these five things. Many diseases can be cured by the use of sun rays e.g. ailments of the heart, eyes, jaundice, leprosy and weak mind.
Rigveda says, it is sun that wakes one up from sleep. It is due to the sun that all can work and are active. All living beings of the creation depend on the sun. The sun removes physical, mental and spiritual weaknesses and makes one healthy and long lived.
Therefore, we should all offer water to SUN GOD in early morning, when colour of sun is orange.
Procedure
1. First, you should take bath and wear clean clothes before doing it. If you don't want to take bath, at least wash your legs, arms and face.
2. Take a copper vessel (Lota) and fill it with water.
3. Straighten your hands and take the vessel towards Sun and start pouring the water slowly. Look at the rays of Sun through the stream of water from the vessel.
4. Start reciting this mantra when you start pouring the water "Om Ghrini Surya Aditya"
5. Please pour the water with such a speed that before the water finishes you should have already recited the mantra for at least 11 times, it takes around 8 to 10 minutes.