Translation:

55. Call on your Lord with humility and in private: for Allah loveth not those who trespass beyond bounds.

Notes (Tafseer)

1033. In prayer, we must avoid any arrogance or show or loudness, or vanity of requests or words. If excess is condemned in all things, it is specially worthy of condemnation when we go humbly before Our Lord,-we poor creatures before the Omnipotent Who knoweth all.