The ruqyah recited by Jibril (peace be upon him) for every illness

A similar narration is reported from another Companion of the Prophet (peace and blessings be upon him), that he (peace and blessings be upon him) said: "Ammar is filled with faith (in every fibre of his being and) down to the joints of his bones."

Muhammad bin Ali Ibn al-Hanafiyyah narrates from Sayyiduna Ammar bin Yasir (may Allah be pleased with him) that he came to the Messenger of Allah (peace and blessings be upon him) while he (peace and blessings be upon him) was suffering from a severe fever. The Messenger of Allah (peace and blessings be upon him) said to him: "Shall I not teach you the supplication that Jibril (peace be upon him) taught me for ruqyah?" I said: Certainly, O Messenger of Allah! So he (peace and blessings be upon him) taught him this supplication: 'Bismillahi arqika, wallahu yashfika, min kulli da'in yu'dhika. Khudhha falta-hnika' (In the name of Allah I perform ruqyah over you, and Allah will cure you of every illness that harms you. Take it, and may it be pleasant (and a means of healing) for you).
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Ammar bin Yasir (may Allah be pleased with him) that he said: I saw the Prophet (peace and blessings be upon him) (in such a state) that there was no one with him (in the early days of Islam) except five slaves, two women and Sayyiduna Abu Bakr (may Allah be pleased with them).
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim).