As for the report narrated by al-Husayn ibn Sa'id, from Uthman, from Ibn Muskan, from Sulayman ibn Khalid, from Abu Ja'far عليه السلام, who said:
Imam عليه السلام said: "Performing wudu after ghusl is an innovation (bid‘ah)."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 147