The word(s) "books" appears 3 time(s) in 3 verse(s) in Quran in Saheeh International translation.

(1) The Messenger has believed in what was revealed to him from his Lord, and [so have] the believers. All of them have believed in Allah and His angels and His books and His messengers, [saying], "We make no distinction between any of His messengers." And they say, "We hear and we obey. [We seek] Your forgiveness, our Lord, and to You is the [final] destination."

(2) O you who have believed, believe in Allah and His Messenger and the Book that He sent down upon His Messenger and the Scripture which He sent down before. And whoever disbelieves in Allah, His angels, His books, His messengers, and the Last Day has certainly gone far astray.

(3) The example of those who were entrusted with the Torah and then did not take it on is like that of a donkey who carries volumes [of books]. Wretched is the example of the people who deny the signs of Allah. And Allah does not guide the wrongdoing people.