Abu Dharr said that God’s messenger was asked what words were most excellent and replied, “What God has chosen for His angles:

Glory be to God and I begin with praise of Him.” Muslim transmitted it.

وَعَنْ أَبِي ذَرٍّ قَالَ: سُئِلَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَيُّ الْكَلَامِ أَفْضَلُ؟ قَالَ:

مَا اصْطَفَى اللَّهُ لِمَلَائِكَتِهِ: سُبْحَانَ اللَّهِ وَبِحَمْدِهِ

. رَوَاهُ مُسلم