Narrated from Fadalah, from Al-Sakuni, from Abu Abdullah عليه السلام:
Imam عليه السلام said: "The Messenger of Allah سبحانه وتعالى (peace and blessings be upon him and his family) kissed 'Uthman ibn Maz'un after his death."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 455