Additional Dua In Qawmah & Jalsah

What is the ruling of reciting –  حَمْدًا كَثِيرًا طَيِّبًا مُبَارَكًا فِيهِ after standing up from Ruku’ and رَبِّ اغْفِرْ لِي ، رَبِّ اغْفِرْ لِي between two sajdah (Sujood)?