As for the other report narrated by Ahmad ibn Muhammad, from Ṣafwan, from Abu Abdullah عليه السلام, who said:
Imam عليه السلام said: "Ablution (Wuduʾ) is twice for each part."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 83