There is nothing in the Sharī‘ah against wearing a
pendant bearing Allah's name. However, common sense demands that a meaningful
sentence like Subhānallāh (Glory be to Allah) or Alhamdulillāh (Thanks be to
Allah) etc. be made part of the pendant. Merely writing Allah seems to have no
meaning or purpose.
Whether one should take off such a pendant when one is to
go to a bathroom or not, depends on the circumstances as well as on the
disposition of the person who is wearing it since this is more a matter of
etiquette and one’s own perception of them.
Question: Can the various verses of the Qur’ān be used to
write a Ta‘wīdh (charm)? Do they really have any good or bad effects?
Answer: We find no mention in the original sources of
Islam about some effects of certain verses on a person who wears them in the
form of a Ta‘wīdh. If some verses have these effects, the Qur’ān would have
clearly stated so. On the contrary, it is explicit that the sole purpose of its
verses is to guide mankind (See for example 2:185). Therefore, one should avoid
using the Qur’ān for purposes which it does not mention.
Using it as a charm will only open the door to
superstition, and superstition is something which really makes a person suffer
spiritually since it drives him away from the Almighty while he himself remains
in the deception of moving closer to Him.