That he heard the Prophet ﷺ when somebody mentioned his uncle (i.e. Abu Talib), saying, "Perhaps my intercession will be helpful to him on the Day of Resurrection so that he may be put in a shallow fire reaching only up to his ankles. His brain will boil from it." Narrated Yazid: (as above, Hadith 224) using the words: "will make his brain boil."
أَنَّهُ سَمِعَ النَّبِيَّ ﷺ وَذُكِرَ عِنْدَهُ عَمُّهُ فَقَالَ لَعَلَّهُ تَنْفَعُهُ شَفَاعَتِي يَوْمَ الْقِيَامَةِ فَيُجْعَلُ فِي ضَحْضَاحٍ مِنَ النَّارِ يَبْلُغُ كَعْبَيْهِ يَغْلِي مِنْهُ دِمَاغُهُ