Futuuhul Ghaib (Penyingkap Kegaiban) Mutiara karya Syeikh Abdul Qadir Jailani. Karya terpenting sang Wali, disamping Fath al-Rabbani dan Qasidah al-Ghautsiyah. Terlepas dari sifatnya yang nyata-nyata mistis, kumpulan berbagai wacana tentang masalah Tasawuf ini, mudah dipahami.

Kitab “Futuhul Ghaib” berarti “Pembukaan Kepada Yang Ghaib” ia adalah salah satu pusaka peninggalan Syeikh Abdul Qodir Al-Jailani selain daripada Futuhul Rabbani dan Qasidah Al-Ghutsiah. Futuhul Ghaib mengandung syarahan-syarahan beliau sebanyak 80 syarah.

"He was not asked about what He did, but they were asked." His son, Abdul Jabbar, asked him, "Which one is sick?" "All my body hurts, except my heart," he replied.

He said, "I sought the help of Allah, 'There is no sacrifice other than Him, Most glorious, glorious and everlasting, and Muhammad is His Messenger."

Aplikasi Kitab Futuhul Ghaib Karya Syekh Abdul Qadir Al-Jailani Lengkap dalam teks bahasa arab dan terjemahan Indonesianya. Futuhul Ghoib ("Penyingkap kegaiban") adalah kitab kuning karangan Syeikh Abdul Qodir Jaelani, berisi 80 BAB yang penuh mutiara hikmah.