Among the 108 forms of Lokeswara Avalokitesvara is one who refuses to accept Nirvana since he considers such acceptance is selfish in view of the ignorance of the great majority of the people who have not yet attained the stage. His sacrifice symbolizes infinite compassion(Karuna), sharing of mankind's misery, willingness to help those in distress. He holds in his hand the indestructible jewel. He is savior and protector from danger. So his mantra "OM MANI PADME HUM" .
Mandala, a Sanskrit word that means a circle and represents the wholeness. Mandalas are recognized generally by concentric circles and probably many other geometric figures.
Mandalas are the most admired and discussed symbol in Buddhism. These are the geometric designs intended to symbolize the universe, and the link is made to their use in Buddhist and Hindu practices.
The word mandala has two parts. The root word is Manda and -la is a suffix .
In order to express the power of their lineage and the merit which enabled them to enter the Mandala, the Vaira master stands before the Mandala ringing the bell and uttering the words of truth- In this section the disciples pass through the curtain permits them now to see the Mandala.
In order to identify the lineage or family of Ones Gone Thus by which disciples may achieve Buddhahood through the practice of Kalachakra, they cast a flower .