Tathāgatagarbha's Power of Meditative Concentration

As for the meditative concentration (samādhi) of the tathāgatagarbha, through observation one can know that it is extremely powerful. In the operation of all dharmas, no matter what states He encounters, He remains suchness immovable (tathatā-acalita)—no matter how the winds blow from east, west, south, or north, He remains serene and unmoved; even when Mount Tai presses down upon Him, His back does not bend. Regardless of any conflicts, disputes, or matters of right and wrong, He simply pays them no heed, operating freely in accordance with the established laws. The Buddha said that He is the great meditative concentration of the Śūraṅgama, never emerging from samādhi and never needing to enter samādhi, unmoved and unshaken amid all dharmas, without rival—He is the true treasure mountain.