Ksitigarbha Sutra 12
The Benefits of Seeing and Hearing
At that time, Shakyamuni Buddha, the Honoured of the World, was radiating various kinds of great, blazing, perfectly coloured lights from the crown of His head. The head controls the whole body and the crown of the head is the superior of the whole. The Buddha radiated light from the crown of His head to show to the gathering that He himself also has the highest respect for the Ksitigarbha Bodhisattva and his Sutra.
After radiating different kinds of lights, the Buddha also produced wonderful sounds. His intention of showing light and producing sounds was to communicate to the gathering that excellent benefit can be obtained from sight and hearing.
The different colours of light revealed to the gathering that sentient beings of different types might be ignorant in committing sins and be cast into the Hells for punishment, yet they would have every opportunity and pleasure of being relieved by the Ksitigarbha Bodhisattva out of their sufferings and also be guided to the Path of Righteousness and finally attain Buddhahood. For light represents transcendental wisdom, which enlightens beings in every corner of all universes without any exception.
The Honoured of the World addressed all those who were present at the thirty-three Heavens, praising the Ksitigarbha Bodhisattva for bringing inconceivable benefit to devas and human beings, and telling them how Ksitigarbha Bodhisattva practised meritorious deeds during his career of following the ten stages leading to Buddhahood — never retreating, but forging ahead to Nirvana. After what Ksitigarbha Bodhisattva had said there was one Maha Bodhisattva named Avalokitesvara who rose from the seat, kneeling down before the Shakyamuni Buddha with clasped hands, and spoke to Shakyamuni Buddha respectfully, "Honoured of the World, Ksitigarbha Bodhisattva has great compassion on sentient beings and practises Infinite Loving Kindness by having incalculable transformations to lead sentient beings out of their sufferings. The meritorious deeds and the Infinite powers of Ksitigarbha Bodhisattva are beyond description. I heard you, the Honoured of the World, and innumerable Buddhas of the ten quarters of space all praising Ksitigarbha Bodhisattva saying that the merits of Ksitigarbha Bodhisattva are so great that even Buddhas of the past, present and the future cannot give the fullest account of them.
You, Honoured of the World, have been so kind as to promise to tell all who are present here the profound activities of Ksitigarbha Bodhisattva. We earnestly hope that you will be kind enough, for the benefit of the sentient beings of the present and the future, to describe the inexpressible benefits and blessings he has conferred on sentient beings, and thus let every one in the eight categories know how to pay respect to Ksitigarbha Bodhisattva in order to attain happiness."
The Shakyamuni Buddha told the Avalokitesvara Bodhisattva, "You have a close relationship with the sentient beings of the Samsara world whether they be devas, dragons, males, females, spirits, devils, and all the erring beings of the six categories of beings who hear your name, see your image, admire your dignity, praise your profound kindness, all of them will proceed straight to the attainment of Buddhahood without retreat. Before they attain Buddhahood, they will always be reborn as devas or as human beings enjoying great bliss. When they have earned enough merits of good deeds then they will meet Buddhas who will predict their attainment of Buddhahood. Now, through having a great compassion for the erring beings of the sentient worlds, you request me to tell you the inconceivable benefit Ksitigarbha Bodhisattva confers on sentient beings. I will certainly do this and hope that you will listen attentively." Avalokitesvara Bodhisattva replied, " Please do so, Honoured of the World."