What is the grade of the hadith: "No debub or jiyāf shall enter Paradise," and what is the meaning of the word "debub"?

This hadith has not been found in the available books of hadith, nor have hadith scholars commented on it after research. Rather, linguists mentioned it in their books. "Al-Dayboob" is a tale-bearer, and "Al-Jayyaf" is a grave-digger.