When a matter would worry the Prophet ﷺ, he would raise his head up toward the sky and say: “Glory is to Allah, the Magnificent (Subḥān Allāhil-ʿAẓīm).” And when he would strive in supplication; he would say: “O the Living, O Sustainer (Yā Ḥayyu yā Qayyūm).”
أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا أَهَمَّهُ الأَمْرُ رَفَعَ رَأْسَهُ إِلَى السَّمَاءِ فَقَالَ سُبْحَانَ اللَّهِ الْعَظِيمِ وَإِذَا اجْتَهَدَ فِي الدُّعَاءِ قَالَ يَا حَىُّ يَا قَيُّومُ