說無垢稱經疏 6.394

6.394

贊曰：此有二句。一修善根莊嚴佛土；二修善巧所修無盡，迴向佛智，故善無窮。不爾，所修受果盡故。此五句已。舊經中，前佛土闕二，及闕此後三，故唯五十句。

Commentary: Here there are two clauses. First, cultivating wholesome roots to adorn the buddha-lands; second, cultivating skillfulness so that what is cultivated is inexhaustible, dedicating it toward buddha-wisdom, so that the wholesome is boundless. If it were not so, what is cultivated would be exhausted when the fruition is received. This concludes the five clauses. In the old sūtra, two [clauses] were missing from the preceding buddha-lands, and the latter three here were also missing, so it had only fifty clauses.