維摩經抄 1.28

1.28

述曰。勞者疲勞。謙者謙讓。於此土中行菩薩行大須疲勞。忍受諸苦。我慢多故大須謙讓。娑婆世界此名忍土。乃至世尊六年苦行成佛已後猶更忍受十種殘報。金鏘馬麥如餘處說。

The commentary explains: "Toiling" means being exhausted; "yielding" means being deferential. In practicing the bodhisattva path in this land, one must necessarily toil and endure all kinds of suffering; because there is much arrogance, one must necessarily be deferential. The Sahā world is here called the "land of endurance." Even the World-Honoured One, after six years of ascetic practice and having attained Buddhahood, still had to endure the ten kinds of residual karmic retribution—such as the spear of acacia wood and the horse barley—as is explained elsewhere.