(a) It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the qur' of a woman, or the menstruation of a woman, is three, four, up to ten days.
(b) Ibn Ulayyah (may Allah have mercy on him) says: al-Jald bin Ayyub is a Bedouin who is not known in hadith.
(c) Ibn Ulayyah (may Allah have mercy on him) said to me: A woman from the family of Anas had prolonged bleeding (istihadah), so Ibn Abbas (may Allah be pleased with him) was asked about her and he gave a ruling, while Sayyiduna Anas (may Allah be pleased with him) was alive. So how could Anas bin Malik have the knowledge of menstruation that I mentioned, while they needed to ask someone else about a matter of which he had knowledge?
(d) Imam al-Shafi'i (may Allah have mercy on him) says: Neither we nor you accept as established the hadith of someone like al-Jald, and we infer the error of one who has better memory than him from less than this.
(e) Sulayman bin Harb said that Hammad bin Zayd used to declare al-Jald weak and say: He did not understand hadith. Hammad bin Zayd (may Allah have mercy on him) says: Jarir bin Hazim and I went to al-Jald bin Ayyub, and he narrated to us the hadith of Mu'awiyah bin Qurrah from Sayyiduna Anas (may Allah be pleased with him) about the menstruating woman. We began to question him closely, and found that he did not distinguish between the menstruating woman and the woman with prolonged bleeding.
(f) Ahmad bin Sa'id al-Darimi (may Allah have mercy on him) asked Abu Asim (may Allah have mercy on him) about al-Jald bin Ayyub, and he declared him very weak and said: He was one of the shaykhs of the Arabs; our companions were lenient in narrating from him.
(g) Abdullah bin al-Mubarak (may Allah have mercy on him) says that the people of Basrah used to reject the hadith of al-Jald bin Ayyub and say that he was one of the shaykhs of the Arabs, not a man of hadith.
(h) Ibn al-Mubarak (may Allah have mercy on him) says that the people of his own city know more about him than others. Ya'qub says: I heard Sulayman bin Harb, Sadaqah bin al-Fadl and Ishaq bin Ibrahim, and it reached me from Imam Ahmad bin Hanbal (may Allah have mercy on him), that they declared al-Jald bin Ayyub weak and did not regard him as a proof.
(i) It is narrated from Ibn al-Mubarak (may Allah have mercy on him) that the people of Basrah declared the hadith of al-Jald bin Ayyub weak. Ibn Uyaynah (may Allah have mercy on him) used to say: Who is Jald, and where is he from?
(j) Abdullah, the son of Imam Ahmad bin Hanbal (may Allah have mercy on him), says that he heard his father speak about al-Jald bin Ayyub, saying that his hadith is worth nothing; he is weak in narrating hadith.
(k) The Shaykh says that weak hadiths have been narrated about the minimum and maximum length of menstruation, and I have explained their weakness in al-Khilafiyyat.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحيض / 1545