The Imam finishing the recitation of the entire Qur'an during the Tarawih because of reciting it outside Salah

Q 2: When the Imam told those being led in Salah (Prayer) about the night on which he will recite the supplication of concluding reciting the whole Qur'an, they asked him how could he do so though he had not finished reciting the entire Qur'an neither in the Tarawih Prayers (special supererogatory night Prayer in Ramadan) nor in Salat-ul-Layl (optional prayer at night), but he replied that he recited the Qur'an in the Tarawih Prayer and in Salat-ul-Layl and outside Prayer to conclude reciting the whole Qur'an. He assured them and told them that he was very intent on finishing reciting the whole Qur'an during the month of Ramadan. Is it permissible for the performers of Salah (Part No. 6; Page No. 90

A: Such a practice was neither an act of the Prophet (peace be upon him) nor of the Salaf (righteous predecessors). It is better to follow in the footsteps of the Salaf. It is worth mentioning that all acts of worship are based on Tawqif (a religious text and not personal opinion), so no Ijtihad (juristic effort to infer expert legal rulings) or Qiyas (analogy) should be adopted in such cases.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.