﴿ ٱقْرَأْ وَرَبُّكَ ٱلْأَكْرَمُ ﴾

“Read - for thy Sustainer is the Most Bountiful One”

Recite reiterating the first one and your Lord is the Most Generous having no counterpart in terms of His generosity wa-rabbuka’l-akram is a circumstantial qualifier referring to the subject of the verb iqra’ ‘recite’