Now there are flowers placed in their vases or upon some offering tray, candles or lamps burning brightly and a blue column of incense smoke rising to the ceiling. It is time to pay one's respects with the whole body to the Teacher. So now one bends oneself, one's mind and body, down and acknowledges that the Buddha was indeed the Perfectly Enlightened One that one's own understanding of Dhamma is insignificant. In the kneeling position, one's hand in anjali are raised to the forehead and then lowered to the floor so that the whole forearm to the elbow is on the ground, the elbow touching the knee. The hands, palm down, are four to six inches apart with just enough room for the forehead to be brought to the ground between them.
Feet are still as for the kneeling position and the knees are about a foot apart.
This is called the prostration with the five limbs, that is the forehead, the forearms, and the knees. This prostration is made three times, the first time to the Buddha, the second to the Dhamma, and the third to the Noble Sangha. An ancient tradition from Thailand makes this more explicit as it adds a Pali formula to be chanted before each of the prostrations. I bow low before the Exalted Buddha. I bow low before the Dhamma.