There are no means of attaining faith and certainty except through the Qur'an.
Ibn Qayyim Al-JawziyyaO you who sold yourself for the sake of something that will cause you suffering and pain, and which will also lose its beauty, you sold the most precious item for the cheapest price, as if you neither knew the value of the goods nor the meanness of the prize. Wait until you come on the Day of Mutual Loss and Gain and you will discover the injustice of this contract.
Ibn Qayyim Al-JawziyyaTruly in the heart there is a void that can not be removed except with the company of Allah. And in it there is a sadness that can not be removed except with the happiness of knowing Allah and being true to Him. And in it there is an emptiness that can not be filled except with love for Him and by turning to Him and always remembering Him. And if a person were given all of the world and what is in it, it would not fill this emptiness.
Ibn Qayyim Al-JawziyyaThe heart, in its journey to Allah, Majestic is He, is like that of a bird; Love is its head, and fear and hope are its two wings. When the head and two wings are sound, the bird flies gracefully; if the head is severed, the bird dies; if the bird loses one of its wings, it then becomes a target for every hunter or predator.
Ibn Qayyim Al-Jawziyya