To protect oneself from black magic

Question: How to protect oneself from black magic (well in advance or if already done by someone).

There are possibilities of someone doing black magic on him. Please advise how to be sure if the black magic is been done on him or not. 


Answer:
Bukhari Volumn 004, Book 054, Hadith Number 490.
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Narated By 'Aisha : Magic was worked on the Prophet so that he began to fancy that he was doing a thing which he was not actually doing. One day he invoked (Allah) for a long period and then said, "I feel that Allah has inspired me as how to cure myself. Two persons came to me (in my dream) and sat, one by my head and the other by my feet. One of them asked the other, "What is the ailment of this man?" The other replied, 'He has been bewitched" The first asked, 'Who has bewitched him?' The other replied, 'Lubaid bin Al-A'sam.' The first one asked, 'What material has he used?' The other replied, 'A comb, the hair gathered on it, and the outer skin of the pollen of the male date-palm.' The first asked, 'Where is that?' The other replied, 'It is in the well of Dharwan.' " So, the Prophet went out towards the well and then returned and said to me on his return, "Its date-palms (the date-palms near the well) are like the heads of the devils." I asked, "Did you take out those things with which the magic was worked?" He said, "No, for I have been cured by Allah and I am afraid that this action may spread evil amongst the people." Later on the well was filled up with earth.

Bukhari Volumn 007, Book 065, Hadith Number 356.
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Narated By Sad : Allah's Apostle said, "He who eats seven 'Ajwa dates every morning, will not be affected by poison or magic on the day he eats them."

Muslim Book 004, Hadith Number 1757.
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Chapter : Excellence of the recitation of the Qur'an in prayer and that of its learning.

Abu Umama said he heard Allah's Messenger (may peace be upon him) say: Recite the Qur'an, for on the Day of Resurrection it will come as an intercessor for those who recite It. Recite the two bright ones, Al-Baqara and Surah Al-'Imran, for on the Day of Resurrection they will come as two clouds or two shades, or two flocks of birds in ranks, pleading for those who recite them. Recite Surah al-Baqara, for to take recourse to it is a blessing and to give it up is a cause of grief, and the magicians cannot confront it. (Mu'awiya said: It has been conveyoud to me that here Batala means magicians.)

Muslim Book 026, Hadith Number 5424.
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Chapter : Medicine and spell.

'Aisha (the wife of Allah's Apostle) said: When Allah's Messenger (may peace be upon him) fell ill. Gabriel used to recite these verses. "In the name of Allah. He may cure you from all kinds of illness and safeguard you from the evil of a jealous one when he feels jealous and from the evil influence of eyou."

Bukhari Volumn 006, Book 061, Hadith Number 535.
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Narated By 'Aisha : Whenever Allah's Apostle became sick, he would recite Mu'awwidhat (Surat Al-Falaq and Surat An-Nas) and then blow his breath over his body. When he became seriously ill, I used to recite (these two Suras) and rub his hands over his body hoping for its blessings.

Bukhari Volumn 006, Book 061, Hadith Number 530.
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Narated By Abu Mas'ud : The Prophet said, "If somebody recited the last two Verses of Surat Al-Baqara at night, that will be sufficient for him."

Recite the 2 Quls and blow on yourself.

InshAllah a chaste person will be protected from magic. Allah is their to save us.

Quran [40:51] We will, without doubt, help Our Messengers and those who believe, (both) in this world's life and on the Day when the Witnesses will stand forth, 

Quran [41:30] In the case of those who say, "Our Lord is Allah," and, further, stand straight and steadfast, the angels descend on them (from time to time): "Fear you not!" (they suggest), "Nor grieve! but receive the Glad Tidings of the Garden (of Bliss), that which you were promised!

Quran [41:31] "We are your protectors in this life and in the Hereafter: therein shall you have all that your souls shall desire; therein shall you have all that you ask for!