Seeking aid from Jinn
بـسـم الله والحـمـد لله والـصلاة والـسـلام عــلى رسـول الله، وبـعـد
Shaikh Ibn Baaz رحمه الله said:
“For those who recite (perform the Ruqyah) on a patient, it is not permissible for them to seek help of the Jinn even if they are Muslims, nor asking them (for a need) – because it a means of Shirk . As for the recitation (of the Qur’aan) to warn the Jinn and to remind them of Allaah, then there is no problem in that. And as for the narrations from the Jinn, they are not acceptable, as they are “Majhool” (unknown and thus unreliable) .”
Source: الفوائد الجلية من دروس الشيخ ابن باز العلمية
 Because normally the Jinn do not help unless an act of Shirk or Kufr is done to please them – like reciting the aayaat from the Qur’aan backwards etc.
 Since we cannot see the Jinn, we cannot know their condition – are they reliable or not, are they telling the truth or not – their status is unknown and thus, they cannot be relied upon.