Is there a basis in the Sunnah for the supplication at the completion of the Qur'an, especially during tarawih?

The questioner : O Shaykh, is there a basis for the supplication at the completion of the Qur'an, especially during tarawih?

The Shaykh : No, there is no basis for it. When a Muslim completes the recitation of the Qur'an, it is recommended (mustahabb) for him to make supplication and gather his family. However, regarding the completion of the Qur'an in this manner during the prayer, the prayer of standing in the night, this long and extensive supplication has absolutely no basis.