Zakariyya bin Hamdawayh al-Saffar and Ali bin Abd al-Aziz related that Hammam said: Matar was asked, while I was with him: From whom did al-Hasan al-Basri take (the ruling of) "ablution after eating what has been touched by fire"? He said: Al-Hasan al-Basri took it from Anas (may Allah be pleased with him), Anas (may Allah be pleased with him) took it from Abu Talhah (may Allah be pleased with him), and Abu Talhah took it from the Prophet (peace and blessings be upon him).
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4694