Buddhism for Today, p343Having finished preaching chapter 21, Sakyamuni Buddha rose from his Law seat and, through his supernatural power, laid his right hand on the heads of the innumerable bodhisattva-mahasattvas and spoke thus: “I, for incalculable hundreds of thousands of myriads of koṭis of asaṃkhyeyas of kalpas, have practiced this rare Law of Perfect Enlightenment. Now I entrust it to you. Do you wholeheartedly promulgate this Law and make it increase and prosper far and wide.”
To lay one’s hand on another’s head or to pat someone on the head is to praise him, according to Japanese custom. In the West it is usually a gesture of affection. In India, however, such an action means to put one’s trust in another, as if to say, “I leave it to you. Do your best.” It is said that Sūryasoma, who taught the Lotus Sutra to his favorite disciple, Kumārajīva, laid his hand on Kumārajīva’s head and said to him, “Reverently propagate this sutra.”
The Buddha’s action of laying his right hand on the heads of the innumerable bodhisattvas through his supernatural power represents his placing deep trust in them. They must have been deeply moved by the Buddha’s action.