All praise be to Allaah Alone, and peace and blessings be upon the Last of the Prophets.
The Permanent Committee for Scholarly Research and Ifta’ has examined the Fatwa request submitted to His Eminence, the Grand Muftee, by Al-Ahsa’ General Court judge Muhammad ibn Sulaymaan Al-Sa`id, which was referred to the Committee by the Secretariat General of the Council of Senior Scholars, no. 5845, dated 24/9/1419 A.H. Following is a statement of the question:
Exchanging congratulations at the start of the blessed month of Ramadaan whether by shaking hands, embracing one another, exchanging family visits, as commonly practiced by the people of Al-Ahsa’: to which category does doing so belong: customarily practices or `Ibaadaat (acts of worship)? If it is better not to do so, what should the congratulated person do? Should they show disapproval of those who congratulate them? Please, bear in mind that such people do so in good faith.
I ask Allaah (Glorified and Exalted be He) to prolong our lives to witness Ramadaan many years and enjoy its blessings for long. I also ask Him to make us all and our parents among those who will be manumitted from Hellfire during this month. Indeed, He (Glorified be He) is the Most Generous, Ever-Bountiful. May Allaah safeguard and protect you!
Answer: After examining the Fatwaa request, the Committee gives the answer that there is nothing wrong with exchanging congratulations onthe coming of Ramadan. The Prophet (peace be upon him) used to announce to his Sahaabah (Companions of the Prophet) the coming of Ramadaan by saying: There has come to you a great and blessed month. He (peace be upon him) also used to educate them about the merits of Ramadaan and urge them to make the best use of it…. read more here.