Question: What is your opinion about the one who places his spit on his finger to turn the pages of the Qur’an. Is this this bad manners with the Quran?
Answer: “there is no harm in that and that is not bad manners. It is not belittlement, rather it is what helps in turning the page and it does not harm the Mushaf at all. This is not from what harms the Mushaf”.
[Fataawa Noor ‘ala Darb (26/39)]
Faisal Ibn Abdul Qaadir Ibn Hassan