What to say upon completing ablution

اللَّهُمَّ اجْعَلْنِي مِنَ التَّوَّابِينَ وَاجْعَلْنِي مِنَ الْمُتَطَهِّرِينَ

Allāhumma ijʿalnī mina at-tawwābīna wa ijʿalnī mina l-mutaṭahhirīn

O Allah, make me of those who return to You often in repentance and make me of those who remain clean and pure.