Is it permissible to recite additional duas (prayers) from the verses of the Quran and hadiths in the last sitting of prayer after reciting the usual duas?

Is it permissible to recite additional duas (prayers) from the verses of the Quran and hadiths in the last sitting of prayer after reciting the usual duas?

Dear Brother / Sister,

You can read duas from verses and hadiths after reciting Tahiyyat, Salli, Barik and Rabbana in the last sitting of a prayer. If you do so, the prayer will be valid and there is no need to perform sajdah as-sahw (prostration of forgetfulness).

Since the last sitting is the phase of praying at length in a prayer, postponing a wajib is not in question. (see. Ö. Nasuhi Bilmen, B. İlmihal, p.195).

However, reciting any prayer other than at-Tahiyyatu in the first sitting of prayer is not appropriate and this requires sajdah as-sahw.

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