金剛三昧經論 3.199

3.199

論曰：此是第六奉行流通。於中四句。皆大歡喜者，聞法歡喜故。心得決定者，離諸疑惑故。頂禮佛足者，重法敬人故。歡喜奉行者，行時轉喜故。

The commentary states: This is the sixth [section], receiving practice and dissemination. Within it there are four phrases: 'all greatly rejoiced' because they rejoiced upon hearing the Dharma; 'their minds attained certainty' because they were freed from all doubts; 'bowing their heads to the Buddha's feet' because they esteemed the Dharma and revered the person; 'joyfully received and practiced it' because their joy grew even greater when practicing it.