From the greatest of causes for the uprightness of the heart and its protection [from harm] is the plentiful reading of the qur.aan.
Whoever walks in front of his father, then he has disobeyed him, unless he walked [ahead] to remove [any] harm from his path.
Be cautious of the scholars of evil, just as you are cautious of Iblees.
…then he is a mushrik, having committed major shirk.
Supplication is the weapon of the strong and the weak, and it is from the delights of the Prophets and the sincere, and with it they seek [aid from Allaah] to ward off all harm.
It reached me that the Fire will not harm the area which has been touched by the tears [which flowed due to the fear of Allaah].
Whoever fears Allaah, then no-one will be able to harm him, and whoever fears other than Allaah, then no-one will be able to benefit him.
So whoever commits [a deed] which Allaah and His Messenger have forbidden, has harmed his religion; and he must remedy this harm by repentance and turning back [to Allaah].
[Regarding] knowledge, if it does not benefit you, it will harm you.
Whoever does not act in accordance with his knowledge, then his knowledge has not benefited him; rather it has harmed him.