Imām Ibn Al-Qayyim رحمه الله stated:
"There are three doors by which the Shaytān (Devil) enters upon the servant (of Allāh):
•One of them is the (servant's) heedlessness.
•The second is the (evil) desires.
•The third is (uncontrolled) anger."
[Al-Wābil As-Sayyib (37)]
Ibn al-Jawzī رحمہ اللّٰہ:
“I think part of the test is when a believer supplicates and receives no response, and he repeats the du‘ā’ for a long time and sees no sign of a response. He should realise that this is a test and needs patience.”
[Ṣayd ul-Khāṭir, 59]
Ibn al-Qayyim
As long as you pray, you knock on the door of Allah. And whoever knocks at the door of Allah, He will open it for him.
[Al-Fawa'id, p.248]
The Messenger of Allah ﷺ said, “Everything has a reality, and the servant will not reach the reality of īmān until he knows that what afflicted him could never miss him, and that what missed him could never have afflicted him.” (Aḥmad)
Anas bin Malik narrated:
The Messenger of Allah (ﷺ) said,
“When one of you makes dua, he should be firm in his
supplication and should not say,
“O Allah, if You wish then grant me (my request),” for indeed, there is none who can compel Him.’”
(Sahih Muslim)
Ibn Qayyim رحمه الله said:
"Patience is that the heart does not feel anger towards that which is destined and that the mouth does not complain"
[Al-'Uddah (156)]
Signs of a Living Heart
The first signs of a living heart are: feeling the weight of one’s mistake,
then feeling regret, and then weeping.
One does not weep unless they have regretted,
and one does not regret unless they have felt the gravity of their sin.