It was narrated from the Messenger of Allah, may His Might be exalted, that he said one day to his companions while they were saying: "O Messenger of Allah, Ramadan has gone." He (may His Might be exalted) said: "Ramadan neither goes nor comes, and there is no substitute for it."
And he said (may His Might be exalted): "Rather, the Month of Ramadan goes and comes and has a substitute; but Ramadan neither goes nor comes. So do not say 'Ramadan', for by Allah, you do not know what 'Ramadan' is. Instead, say: {The Month of Ramadan in which was revealed the Quran} 1 .
Have you not heard the saying of Allah, Mighty and Majestic: {So whoever among you witnesses the month, let him fast it} 2 ?
And you only ..witness the Month; as for "Ramadan," you are not able to witness it.
The Month is only attributed to it out of honor, exaltation, glorification, and nobility for Ramadan.