The opinion of Imam Ahmad regarding wudu' (ablution) from vomiting

Question:
And among the things is that if Imam Ahmad (may Allah have mercy on him) has weakened this narration, and Ahmad does not believe in these authentic hadiths, and al-Tahawi narrated from him that after what was in it, Khalid ibn al-Dham passed by, so when he prayed and said the taslim, he said to him: "Did you pray with my hand?" Abu Hanifa (may Allah have mercy on him) said: "May Allah pray upon him and grant him peace, so that no one is ever misled, for this is his methodology."

Answer:
This is a second narration, a second narration that Imam Ahmad agrees with the majority. But the madhhab (school of jurisprudence) in the text of al-Zad and others is to act according to what this hadith indicates, not just for the sake of this hadith, but rather it is reported that the Prophet (peace and blessings be upon him) vomited, and it is reported that the Prophet (peace and blessings be upon him) vomited and then performed wudu'. So this supports this hadith: wudu' from vomiting. Imam Ahmad did not take this hadith alone as a condition. As for the issue of blood, this is a matter of research. The issue of blood, yes, it is a matter of research. Yes. There is a difference between vomiting and blood. Yes.