妙法蓮華經玄贊 9.330

9.330

解妨者，何故不言從傍來，乃言從地踴出？答：明依四行以持經，踴出生死之地故。又明不離此界佛曾所化，已超生死之地故。不言從傍來，但說從地踴出。

Regarding resolving objections: Why does it not say "coming from the sides" but instead says "welling forth from the earth"? Answer: To clarify that they uphold the sūtra relying on the four practices, leaping out of the ground of saṃsāra. Furthermore, it clarifies that they do not leave this realm and were once converted by the Buddha, having already transcended the ground of saṃsāra. Therefore, it does not say "coming from the sides," but only says "welling forth from the earth."