Is it ok for Muslims to congratulate each other at the beginning of Ramadhan?

Every year Muslims all over the world wait in eagerness for the coming of the month of Ramadan. Ramadan, the month in which every night Allah has designated people to be freed from the hellfire, the month in which there is a night better than one thousand months, whoever fasts it with faith and reflection then all of his past sins will be forgiven.
Because of the status of this month and its importance, many of us greet each other in excitement with phrases such as “Ramadan Mubaarak” , “Ramadan Kareem”, “Kullu ‘aam wa antum bi khair” anticipating the great blessings of this month and wishing them for others.
Yet these phrases and greetings, even though we use them frequently, do they have a basis in our religion? Meaning: is there a precedent which has been set for such greetings?

Read the complete article that discusses various issues regarding the permissibility of this practice: Congratulating each other at the commencement of Ramadhaan.