‘Abdah reported: Umar ibn al-Khattab, may Allah be pleased with him, would say these words aloud in prayer, “Glory be to You, O Allah, with Your praises. Blessed is Your name, exalted is Your majesty. There is no God other than You.”
Source: Ṣaḥīḥ Muslim 399
Grade: Sahih (authentic) according to Muslim
عَنْ عَبْدَةَ أَنَّ عُمَرَ بْنَ الْخَطَّابِ رضي الله عنه كَانَ يَجْهَرُ بِهَؤُلَاءِ الْكَلِمَاتِ يَقُولُ سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ تَبَارَكَ اسْمُكَ وَتَعَالَى جَدُّكَ وَلَا إِلَهَ غَيْرُكَ
399 صحيح مسلم كتاب الصلاة باب حجة من قال لا يجهر بالبسملة