There is no sin on a person who drops the Mus-haf unintentionally

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Check below answers in case you are looking for other related questions:
He works in a bookstore and Christians come to buy Mushafs to give as gifts to Muslims; can they touch them?
Writing names on Mus-hafs is permissible

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Related Answers:
Ruling on putting the Holy Qur’aan on a mobile phone or carrying it in one's pocket
Carrying the Qur’aan to the bathroom so that it will not be stolen
Kissing the Mus-haf, kissing one's fingers and swaying whilst reciting Qur'an
He works in a bookstore and Christians come to buy Mushafs to give as gifts to Muslims; can they touch them?
Writing names on Mus-hafs is permissible

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