﴿ وَلَقَدْ مَنَنَّا عَلَيْكَ مَرَّةً أُخْرَىٰٓ ﴾

“"And, indeed, We bestowed Our favour upon thee at a time long since past,”

(And indeed, another time) other than this time, (already We have shown thee favour) We have favoured you at another time, i.e. other than this time,