This hadith is about the importance of glorifying Allah before starting one's prayer. It was narrated by Abu Sa'eed that when Prophet Muhammad started to pray, he would say 'Subhanakallahumma wa bihamdika tabarakasmuka wa ta'ala jadduka wa la ilaha ghairuk'. This phrase translates to 'Glory and praise be to You O Allah. Blessed be Your name and exalted be Your majesty, there is none worthy of worship except You'. This phrase serves as a reminder for us to remember our Lord before we start our prayers. We should take a moment to thank Him for all His blessings and remind ourselves that He alone deserves all our worship and devotion. We should also remember that no one else can provide us with what He has provided us with in terms of guidance and mercy. By saying this phrase every time we start our prayers, we are showing gratitude towards Him for His countless blessings upon us.