大毘盧遮那經廣大儀軌 2.10

2.10

Next, to the right of Mahāvairocana is the energetic Avalokiteśvara,
Universally possessing a four-sided aspect, with an auspicious conch shell in the centre,
Producing a padma lotus, blossoming and containing fruit,
Symbolising vajra wisdom above, supported by the Great Lotus Mudrā.
Contemplate the light disc of the syllable Sa (upper tone); within the disc Avalokiteśvara appears,
Smiling and seated on a white lotus, with Amitāyus appearing upon the crown,
Abiding in the Universal Contemplation Samādhi, uttering his own heart mantra;
The mudrā is like a blooming lotus.