Is A Prayer Established Without Turning To The Direction Of Qiblah Valid?

Is a prayer established without turning to the direction of qiblah valid?

A prayer which is established by turning to another direction other than the qiblah intentionally is invalid. A person who does not know the direction of qiblah makes research about it and establishes the prayer according to the decision s/he takes after the information s/he obtained. If one understands that s/he is mistaken about the direction after completion of the prayer, that prayer will be valid so that person does not need to establish it again. If one understands during prayer that s/he turned to the wrong direction although s/he made research, s/he turns to the correct direction while in the prayer and continues the prayer. A person who establishes prayer without making any research or asking anyone should re-establish that prayer if the direction is wrong (Ibn Abidin, Radd al-Muhtar, II, 119).

Source: Presidency Of Religious Affairs The Turkey, High Board of Religious Affairs FATWAS