勸發菩提心集 3.149

3.149

難行愛語者，略有三種：於能殺害怨家惡友，以善淨心無穢濁心，思擇為說如前三語，名第一難。於其上品愚癡鈍根諸有情所，心無疑慮，思擇為說種種法教，誓受疲勞，如理如法如善攝取，名第二難。於其諂詐欺誑親教、軌範、尊者、長老真實福田，行邪惡行諸有情所，無嫌恨心，無恚惱心，思擇為說如前三語，名第三難。

Difficult-to-practice affectionate speech is, in brief, of three types: (1) toward an enemy or bad friend who is capable of killing or harming, with a wholesome and pure mind free from defilement, thoughtfully speaking the preceding three kinds of speech for them—this is called the first difficulty; (2) toward sentient beings of the highest degree of foolishness and dull faculties, with a mind free from doubt or hesitation, thoughtfully expounding various Dharma teachings for them, vowing to endure weariness and fatigue, grasping them in accordance with reason, in accordance with the Dharma, and with goodness—this is called the second difficulty; (3) toward sentient beings who deceive and defraud their upādhyāyas, ācāryas, venerables, and elders who are genuine fields of merit, and who practice evil conduct, having no thoughts of resentment and no thoughts of enmity or annoyance, thoughtfully speaking the preceding three kinds of speech for them—this is called the third difficulty.