﴿ أَوْ يَذَّكَّرُ فَتَنفَعَهُ ٱلذِّكْرَىٰٓ ﴾

“or have been reminded [of the truth], and helped by this reminder.”

or be admonished yadhdhakkar the original tā’ of yatadhakkar has been assimilated with the dhāl and so the reminder the admonition heard from you might benefit him a variant reading for tanfa‘uhu has tanfa‘ahu as the response to the optative statement.