سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ، وَتَبَارَكَ اسْمُكَ، وَتَعَالَى جَدُّكَ، وَلَا إِلَٰهَ غَيْرُكَ
Subhanaka Allahumma wa bihamdika, wa tabarakasmuka, wa ta'ala jadduka, wa la ilaha ghayruk
Waxaad tahay quduus, Allaahumma, mahad baana kuu leh. Magacaagu waa barakaysan, haybaddaaduna way sarraysiisay, ilaah kalana ma jiro adiga mooyee.
Opening supplication (Thana) recited silently after Takbir al-Ihram
This dua glorifies Allah and is the recommended opening for prayer.