妙法蓮華經玄贊 6.397

6.397

贊曰：此結領今得。「佛子得」者，菩薩所得一乘因果。我今聞經發心求趣，如彼所得皆已得之，決定得故名皆已得。菩薩昔時初發心位，如我今日，彼既究竟得，故我亦然，名皆已得，理無異故。

The commentary says: This concludes the reception of the present obtaining. "What the Buddha's sons obtain" refers to the cause and fruition of the Single Vehicle obtained by bodhisattvas. Now, having heard the sūtra, we generate the mind to seek and pursue it; as with what they obtained, we have all already obtained it. Because it is definitely obtained, it is said that we "have all already obtained it". The former stage of initial aspiration of the bodhisattvas was like our present state today; since they ultimately obtained it, we will also do so; it is called having all already obtained it because the principle is not different.