Dought & clear - Uttering the intention out loud for salaat al-Taraaweeh and other prayers is bid’ah

During Ramadan we pray salat al-taraweeh, what is to be said in the
beginning of the prayer.for example nawatu asalee lillah al atheem
feta'at rubee al kareem rika'tein sinit........
Praise be to Allaah
Uttering the intention out loud when one is going to pray is bid'ah
(an innovation), whether that is for Taraaweeh prayers or any other
prayer.
Ibn al-Qayyim said inZaad al-Ma'aad(1/201):
When the Prophet(peace and blessings of Allaah be upon him) stood up
to pray, he would say: "Allaahu akbar," and he did not say anything
before that, or utter the intention (niyyah) out loud at all. He did
not say, "I am going to pray such-and-such a prayer, facing the
qiblah, four rak'ahs, as an imam or following an imam." Andhe did not
say "ada'an (on time)" or "qadaa'an (making up a missed prayer)" or
"fard al-waqt(the obligatory prayer ofthis time)." These are all
bid'ahs which were not narrated by any scholar with any isnaad, be it
saheeh, da'eef, musnad or mursal … Neither was this narrated from any
of the Prophet's companions, and none of the Taabi'een or the four
imams described it as mustahabb.
See also question no. 13337
So the Muslim should have the intention of praying Taraaweeh in his
heart only, and not utter anything out loud.
And Allaah knows best.