The miracles of Allah cannot come in writings because there are many signs of God but when the word religion is used, the dictionary meaning of the religion is the belief in one personal God or gods. The religion is recognized by the books. Religious scripture of Islam is Quran and Hadith.
Quran is the miracles of miracle, 1400 years ago it was revealed on Prophet Muhammad peace be upon him who never attended any institute and was an illiterate person but when he presented the book in front of people of Arab he was criticized as a patient of some mental illness.
Miracles of Quran include today its matching with the modern science. Whatever science is discovering today has been told 1400 years ago in the Quran. The time keeps on changing and for every age there is a peak of some specific art for example there was an age of poetry, language and now it is the era of science and technology.