妙法蓮華經玄義 4.81

4.81

菩薩以大涅槃心，修於聖行，得無畏地，具二十五三昧無方大用。爾時慈悲是真梵行，非餘梵天所修四無量心，亦非三藏、通教，眾生緣、法緣等慈悲也。以今慈、悲、喜、捨，熏修眾行，無不成辦。《大經》云：「若有人問：誰是一切諸善根本？當言：慈是。」慈既是行本，故言梵行。若依圓語，亦如《大經》：「慈即如來，慈即佛性」。慈若不具佛十力、四無所畏、三十二相者，是聲聞慈；若具足者，是如來慈。是慈即是大法聚；是慈即是大涅槃。慈力弘深，具一切福德莊嚴，故名梵行。

The bodhisattva, with the mind of great nirvāṇa, cultivates holy practice, attains the ground of fearlessness, and fully possesses the boundlessly vast functions of the twenty-five samādhis. At that time, benevolence and compassion are the true pure practice, not the four immeasurables cultivated by other Brahmā devas, nor the benevolence and compassion focused on sentient beings or focused on phenomena of the tripiṭaka or shared teachings. Using the present benevolence, compassion, sympathetic joy, and equanimity to perfume and cultivate all practices, there is nothing that is not accomplished. The Great Sūtra says: 'If someone asks: What is the root of all good dharmas? One should say: Benevolence is.' Since benevolence is the root of practice, it is called pure practice. If spoken according to the perfect [teaching], it is also as the Great Sūtra says: 'Benevolence is the Tathāgata; benevolence is the Buddha-nature.' If benevolence does not possess the Buddha's ten powers, four fearlessnesses, and thirty-two marks, it is śrāvaka benevolence; if it possesses them fully, it is Tathāgata benevolence. This benevolence is the great mass of Dharma; this benevolence is great nirvāṇa. The power of benevolence is vast and deep, fully possessing all adornments of merit; therefore it is called pure practice.