The Modzitzer Rebbe in Divrei Yisroel discusses Mashal cited from first Rashi on VaYeshev a Jewel Lost in the sand, the parable is analyzed in 4 ways where the Jewel is: Torah LiShma lost in Sands of Ulterior Motives and Insincerity, Keviyas Itim of Torah lost in the sands of time of our busy daily schedule of life running after parnassah, Teshuva lost in the sands of life, the Neshama and its unique mission lost in the sands of life.