What is the authenticity of Abu al-Faraj Ibn al-Jawzi's statement that some of the hadiths in "Musnad Imam Ahmad" are fabricated?

Scholars differ in their judgment on whether some hadiths are fabricated or not, due to their differing views on the narrators or the text of the hadith.

The esteemed scholar Al-Mu'allami pointed out that invalid and fabricated does not always necessitate intentional lying, as a narrator might be trustworthy but mistaken.

For this reason, scholars differed on whether Imam Ahmad's Musnad contains fabricated hadiths. Al-Hafiz Abu Al-Ala Al-Hamadhani denied the existence of any fabricated hadith in Imam Ahmad's Musnad, while Abu Al-Faraj Ibn Al-Jawzi affirmed it. The difference between them lies in the definition of "fabricated hadith."

A number of scholars have acknowledged the presence of weak and semi-fabricated hadiths in the Musnad, considering them "a drop in the ocean" or hadiths that are extremely weak, and whose invalidity might be self-evident.

Examples of hadiths described as fabricated in the Musnad include the hadith of Aisha, may Allah be pleased with her, concerning Abd Al-Rahman ibn Awf entering Paradise crawling, the hadith of Anas ibn Malik about the virtue of Ascalon, and the hadith of Imran ibn Husayn concerning the Wilayah of Ali.

In conclusion, Imam Ahmad ibn Hanbal's Musnad contains a small number of extremely weak hadiths that can be described as fabricated based on a broad interpretation of the concept of a "fabricated" hadith.