Hadith & Ruqyah
-It is reported in a hadith that there is no harm in reciting ruqyah for cure if this does not involve shirk (the sin of idolatry or associating beings or things with Allah s.w.t.). (Abu Dawud).
-Narrated from Abu Huraira (may Allah be pleased with him): "I have memorized two kinds of knowledge from Allah's Messenger (ص) . I have propagated one of them to you and if I propagate the second, then my pharynx (throat) would be cut (i.e. I would be killed). (Saheeh Bukhari)
The following list of hadith are proofs of written ruqyah (taweez, hirz).
-As for taweez, Hadhrat ibn Amr ibn al-Aas (Allah be well pleased with him) used to write some words (ayat, ruqyah) and hang it on the necks of children. (Abu Dawud).
-Yahya related to me from Malik that Humayd ibn Qays alMakki (Allah be well pleased with him) said, "A man came to the Messenger of Allah (ص), with the two sons of Jafar ibn Abi Talib. He (ص) said to their nursemaid: 'Why do I see them so thin?' Their nursemaid said, 'Messenger of Allah (ص), the evil eye goes quickly to them. Nothing stops us from asking someone to make talismans (using ayat from Qur'an) for them, except that we do not know what of that would agree with you.' The Messenger of Allah (ص) said: 'Make talismans for them. Had anything been able to precede the decree, the evil eye would precede it.' " (Muwata – Imam Malik)
-Yahya related to me from Malik from Yahya ibn Said from Sulayman ibn Yasar that Urwa ibn az-Zubayr (Allah be well pleased with him) told him that the Messenger of Allah (ص) entered the house of Umm Salama, the wife of the Prophet (ص). There was a child weeping in the house, and they told him (ص) that it was from the evil eye. Urwa said, "The Messenger of Allah (ص) said, 'Why do you not find someone to make a talisman to protect it from the evil eye?' " (Muwata – Imam Malik)
-When Egypt was conquered by the Muslims, there was a custom among Egyptians to throw a girl in the Nile River on the 11th night of one of the non-Arabic months in order that the Nile would continue to flow. Amr Ibn al-As wrote to the caliph 'Umar (Allah be well pleased with him) concerning this custom. 'Umar (Allah be well pleased with him) sent a message to the Nile saying: "If you were flowing before by your own power, we do not want you to run; and if Allah is the one who makes you flow, we ask the Almighty to make you flow." Amr Ibn al-As threw the letter of 'Umar (Allah be well pleased with him) into the Nile one day before this egyptian celebration. The following morning they woke up to find the river flowing stronger and had gone up 48 feet in one night. (Ibn Hajar, in Al-Sawa'iq)