妙法蓮華經玄贊 5.172

5.172

贊曰：此更陳告為許說由。「然」猶必爾，亦如是也。然可，許說也。

Eulogy: This further statement serves as the reason for consenting to speak. 'However' (然) means 'it must be so', or 'it is like this'; 'approving' (然可) means consenting to speak.