I say: He is weak. Ibn ʿAdi said: “He is among those whose hadith may be recorded.” Abu Hatim said: “Weak in hadith; rejected in hadith.” Al-Saji said: “He has rejected narrations.” As for Ibn Maʿin, he said: “There is no harm in him,” and on another occasion he said: “Trustworthy.”

I say: In any case, he is not severely weak; thus, narrations from one like him are strengthened by corroborating chains and supporting reports. I have found numerous supporting reports for it from a number of the Companions:

The first is from Anas ibn Malik, attributed to the Prophet, peace and blessings be upon him, with the wording: “A mudd suffices for minor ablution, and a saʿ suffices for the ritual bath.” Abu ʿAwanah reported it in his Sahih (1/233) through Muʿawiyah ibn Hisham: Sufyan narrated to us, from ʿAbdullah ibn Jabr, who said: “I heard Anas narrate it.” This is a sound chain of transmission and meets Muslim’s conditions.

The second is from Jabir, attributed to the Prophet, peace and blessings be upon him: “A mudd suffices for minor ablution, and a saʿ for the ritual bath following sexual impurity.” Al-Bayhaqi reported it (1/195) through Husayn and Yazid ibn Abi Ziyad, while Ahmad (3/370) reported it through Yazid alone—both from Salim ibn Abi al-Jaʿd, from him. Al-Bayhaqi’s chain of transmission is authentic.

The third is from ʿAli, attributed to the Prophet, peace and blessings be upon him, with similar wording. Ibn Majah reported it (270) through Habban ibn ʿAli, from Yazid ibn Abi Ziyad, from ʿAbdullah ibn Muhammad ibn ʿAqil ibn Abi Talib, from his father, from his grandfather.