"Eza 7abeebak 3asal, Ma Tel7aso Kello" - Lebanese Slang, literally means "if your loved one is made of honey, don't lick it all" metaphorically means "if someone is nice or good to you, don't abuse it!".

Sample conversation:

Person 1: "Rani is so nice, l asked him to give me a copy of his lecture notes, and he agreed"

Person 2: "Yes it is very nice of him"

Person 1: "I am thinking of asking him to give me a copy of all his notes for all the courses we take together, that'll spare me so much time" 

Person 2: "bro, Eza 7abeebak 3asal, Ma Tel7aso Kello!! why don't you do some work yourself?"