大般涅槃經義記 5.100

5.100

愛別離中，先問，後辯，略無結文。辯中初略，「今當」下廣。略中三句：一總明愛別為眾苦本；二「如說」下別明愛心為眾苦本。先舉偈頌，「因愛生愛、因愛生怖」正明苦本，「若離於愛，何愛？何怖」反明苦本，「愛因緣」下重復顯之；三「愛別離者謂命終」下別明別離為眾苦本，先解別離、後明生苦。廣中，「今當分別顯示」總以標舉，「過去」已下正辯其相，先舉往事，「菩薩尚憶過去」已下以昔況今。

In the [section on] separation from what is loved, there is first an interrogation and next an explanation, but briefly there is no concluding text. In the explanation, it is first brief, and from 'Now I shall' downward it is detailed. In the brief part there are three clauses: First, it generally clarifies that separation from what is loved is the root of all suffering. Second, from 'As it is said' downward, it specifically clarifies that the mind of love is the root of all suffering. First, it cites verses: 'Because of love, love arises; because of love, fear arises' directly clarifies the root of suffering; 'If one is free from love, what love? What fear?' clarifies the root of suffering by way of negation; and from 'With love as cause and condition' downward, it reveals it once more. Third, from 'Separation from what is loved refers to the end of life' downward, it specifically clarifies that separation is the root of all suffering, first explaining separation and then clarifying the arising of suffering. In the detailed part, 'Now I shall explain and demonstrate it' generally marks the presentation; from 'In the past' downward directly explains its marks: first citing past events, and from 'The bodhisattva still remembers the past' downward using the past to illustrate the present.