He is Shaykh Abdul Muhsin ibn Naasir ibn Abdur Rahman aal Ubaykaan. He was born in 1372 AH in the city of Taif but currently he is based in Riyadh.
He studied tajweed with Shaykh Muhammad Makhdoom al-Bukhari and Shaykh Muhammad Sakr.
Among his mashaykh are Shaykh Abdullah ibn Muhammad ibn Humaid and Shaykh Abdul Azeez ibn Baaz. He received his Bachelor's degree in Sharia from the Al-Imam Muhammad Ibn Saud Islamic University in Riyadh.
Shaykh żli-'Ubaykżn has been a member of the Council of Senior Scholars since 1426 AH. He also holds many positions within Saudi Arabia's judiciary such as the Judge of the Supreme Court in Riyadh as well as other judicial positions in Hail and Taif. In 1430 AH he was appointed as adviser at the Royal Court and given a Ministerial position.
Some of his students like Shaykh Abdullah ibn Khunayn and Shaykh Sa'd ash-Shatri are members of Permanent Committee and Council of Senior Scholars. Some of his other students are Shaykh Sultaan al-Eid and Shaykh Abdus Salaam Burjis.
Click here to listen/download the recitation of some Surahs by the Shaykh in this month of Ramadhaan.
sources: Shaykh's official website al-obeikan.com and answering-extremism.com
The Shaykh hafidhahullah used to be with the Qutbiyyah in the early 1990's. The Qutbiyyeen would shower praises upon him, accompany him and frequent his mosque in large numbers. By the permission of Allaah, the Shaykh was later guided to see the truth concerning this destructive call of the Qutbiyyah and he left them as a result. So he began to openly refute the heads of rebellion and revolt, he would advise the 'Committee for Defence of Human Rights' and their leader, Muhammad al-Mis'aree.
Here is what the Shaykh said in an interview about his past mistake,
...in the past, I expressed my opinion in public, I now believe that public denunciations are a mistake, both on a religious and a rational level. I continue, however, to give advice to and discuss matters with those in power, in private."
Please click the following links to know more about the efforts of the Shaykh in clarifying the truth.