(a) Al-Walid narrated it with the same meaning, saying that it is reported from Raja' bin Haywah. (b) Imam Abu Dawud (may Allah have mercy on him) said: It is said that Thawr did not hear this hadith from Raja'. (c) Thawr said: I was told from Raja' bin Haywah, from the scribe of al-Mughirah, from the Prophet (peace and blessings be upon him), as a mursal report, and there is no mention of Sayyiduna al-Mughirah (may Allah be pleased with him) in it. The Shaykh said: Abu Isa (al-Tirmidhi) mentioned it likewise from al-Bukhari and Abu Zur'ah al-Razi.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1380