法華經義記 1.71

1.71

「須菩提」者，譯為善吉，明其人有德，常以吉事利人。所以爾者，此人昔於福田所生嫌嫉之心，仍流轉地獄無窮受苦，今者立誓，誓不惱他，是故《涅槃經》云：「若有眾生嫌我坐者，我當終身立不移處，行臥亦爾」，誓有所為作於物為吉也。

"Subhūti" is translated as "Good and Auspicious". This clarifies that this person possessed virtue and constantly benefited others with auspicious matters. The reason for this is that in the past, he gave rise to thoughts of resentment and jealousy toward the field of merit, and consequently drifted endlessly through the hells, enduring suffering. Now he made a vow never to afflict others. For this reason the Nirvāṇa Sūtra says: "If there are sentient beings who dislike my sitting, I will stand all my life without moving from the spot; the same applies to walking and lying down." He vowed that whatever he did would bring auspiciousness to beings.