Liturgy do Izajasza 40:6

The Fly, when Yisra’el is not busying itself with Torah, is saying, “The voice said, ‘Call out.’ And he said, ‘What shall I call out?’ ‘All flesh is grass, and all its grace is as the flower of the field.’ ‘…The grass withers, the flower fades; but the word of our elo’ah shall endure forever.’”