Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: The first thing to be taken away from your religion will be trustworthiness, and the last thing to remain will be prayer. And this Qur'an which is among you, soon it will be taken away. The Companions asked: How will this happen when Allah has preserved it in our hearts and we have written it in the manuscripts? He replied: The Qur'an will be taken away at night, so whatever is in your hearts will be erased, and whatever is in the manuscripts will also be taken away. Then Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) recited this verse: ﴿And if We willed, We could surely take away that which We have revealed to you. Then you would not find for yourself concerning it any trustee against Us.﴾ [سورہ الإسراء: 86]