Look, Ráma, where the devotees Hung their bark mantles on the trees, Fresh from the bath: those garments wet Through many a day are dripping yet. See, through those aged hermits’ power The tender spray, the bright-hued flower With which the saints their worship paid, Fresh to this hour nor change nor fade.

In plain words: Shabari shows Rama the bark clothes the sages hung on trees after bathing, which are still wet after many days. The flowers they used in worship have also stayed fresh and never faded, because of the sages' power.