What is the ruling on making supplication in prostration with the supplications found in the Qur'an?

The questioner : Making supplication in prostration with the supplications found in the Qur'an is permissible.

The Shaykh : Whether it is a voluntary prayer or an obligatory one.

The questioner : Whether it is a voluntary prayer or an obligatory one, the supplication is...

The Shaykh : If you are praying alone, you may supplicate with whatever you wish, even if you lengthen it. But if you are the imam, do not lengthen it.

The questioner : ... Our Lord, and give us good in this world...

The Shaykh : Even if it is Qur'an, even if it is Qur'an.

The questioner : O Shaykh, if you please, is it permissible for me to say...

Another questioner : Is it permissible for a scholar to leave an obligatory prayer in the mosque, O Shaykh?
The student : And peace be upon you.
Another student : Peace be upon you.