法華文句記 7.127

7.127

實如所問，言通意別故云藥草，言別意通且指聲聞。佛意雖通述，其得解別在迦葉，述其不及及以復宗，若別若通皆成藥草；地雨復是述其領實，故不別說。

It is indeed as you ask: because the expression is universal but the meaning is specific, it speaks of 'medicinal herbs'; because the expression is specific but the meaning is universal, it provisionally points to the voice-hearers. Although the Buddha's intention universally endorses, the attainment of understanding is specifically in Kāśyapa; endorsing what he did not attain as well as returning to the core theme—whether specific or universal, all become medicinal herbs. Earth and rain, moreover, endorse his understanding of the real; hence they are not spoken of separately.