Musannaf Ibn Abi Shayba 21:382

Yahya ibn al-Fudayl narrated to us, from al-Ala’ ibn al-Musayyab, from al-Fudayl ibn Amr, who said: A man came to Ali and said, "So-and-so is ill." He said, "Does it please you that he recovers?" He said, "Yes." He said, "Say: 'O Wise One, O Generous One, heal him,' three times."