Musnad Abu Ya'la al-Mawsili 46:1

Abu Bakr ibn Abi Shaybah narrated to us, Ibn 'Uyaynah narrated to us, from Ibn Abi Najih, from his father, from Qays ibn Sa'd, in a narration, he said: "If faith were suspended at the Pleiades, men from the people of Persia would have attained it."