The Book of Occultation — al-Ṭūsī · Hadith 769 (#Ḥadīth #18)
Chapter 52 | Some Qualities, practices and manners of the Master of the Age
500- عنه، عن علي بن أسباط، عن أبيه أسباط بن سالم، عن موسى الابار، عن أبي عبدالله عليه السلام، أنه قال: اتق العرب فإن لهم خبر سوء. أما إنه لا يخرج مع القائم منهم واحد.
H 500 - It is narrated from Fadhl from Ali bin Asbat from his father, Asbat bin Saalim from Musa Abaar from Imam Ja’far Sadiq that he said: “The Arabs should be warned as it would be a very bad time for them, because not one of them will arise with the Qaim.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).