There is no such thing as the 'Islamic' language. Purisits may say it must be Arabic but there are many forms, and dialects of the Arabic language.
The Proper Arabic version of "Good Morning" is Sbah al-Khayr (صباح الخير)
Literally, Good is "Marayaw", and Morning is "Mahinaat" if we say it in a sentence Marayaw in Mahinaat. But the Tau Sug aren't use to say "Marayaw in Mahinaat". They rather prefer the Islamic salutation " Assalamu Alaykum" than saying "Good Morning" among themselves.
You could say, "Good morning, [her name]! I hope you have a wonderful day."
To say good morning in Dhivehi, you have to say "goedemorgen".
good morning
Good morning.
good morning
good morning
good morning
In Farsi, you can say "Sobh bekheir" for good morning.
To say Good Morning in Cheyenne is: pâhávevóonä'o
"good morning in Taiwan"
Just say "good morning! Thanks!"