According to quraan and hadith -about taking a "taaweez"

Allah Ta?la says in the Noble Qur?n, 'In the Qur?n is (spiritual, physical)
cure for people.'

The opening chapter of the Noble Qur?n, Surah Faatiha is also called the
chapter of Shifaa. It is recorded in the Bukhari Shareef vol. 1 p. , 'A
ruler of a certain clan was stung by a creature, the people of the area
requested the Sahaaba to cure him, one Sahaabi read Surah Faatiha and blew
on the affected area and cured the ruler. The Prophet (Sallallaahu ?layhi
Wasallam) even praised the Sahaabi for doing so.

From the above quotations, it is clear that the verses of the Noble Qur?n is
a means of cure. Treating oneself with Taweez containing verses of the Qur?n
is similar to treating oneself with medication. By using medication, one
merely places his trust in Allah Ta?la and use the medication as a means of
cure. The effect in the means is with the Will of Allah Ta?la so, too is the
usage of the Taweez.

The art of making Taweez is a science independent to other known sciences.
People who have studied this science are most knowledgeable to explain its
vast understanding. One thing must be outlined at the outset is that anyone
practising the making of Taweez cannot ascribe (in his method and
application) partners with Allah Ta?la. Any act of Kufr is unacceptable in
Islam.

The people during the time of Jaahiliyya had an incorrect belief that the
stars and planets cause rainfall, but the Prophet (Sallallaahu ?layhi
Wasallam) dismissed that. The drawings and illustrations used in Taweez are
like the concepts used in geometry, etc. to arrive at a solution.

In conclusion, consider the following Hadith: Abu Khuzaymah (Radhiallaahu
?nhu) narrates from his father that he asked Rasulullah (Sallallaahu ?layhi
Wasallam), 'Inform me about Rukan (blowing in water and Taweez), medication,
and means of security, does it change Taqdeer (predestination)? He replied,
'They (all the above) are within Taqdeer. (Mishk?t pg. 22)

and Allah Ta'ala Knows Best