“Yearning for Allah and His meeting is like the gentle breeze blowing upon the heart, extinguishing the blaze of the Dunya. Whosoever caused his heart to settle with his Lord shall be in a state, calm and tranquility, and whosoever sent it amongst the people shall be disturbed and excessively perturbed.” [Ibn Qayyim Al-Jawziyyah (rahimahullaah)]
From the lives of our pious predecessors:
UMAR (radiallaahu anhu) became unconscious after he was stabbed, and it was said: “Nothing would wake him up except the call to prayer, if he is still alive.” They said to him, “The prayer has finished, O Leader of the Believers!” He woke up and said, “The prayer, by Allah! Verily, there is no share in Islam for whoever abandons the prayer.” He performed the prayer while his wound was bleeding. (Sifat As-Safwah 2/131, As-Siyar 5/220)
“If you do not find any sweetness and relaxation in your heart from a [good] deed, then you should suspect your heart. Verily, Allâh is grateful. That is, He must reward the doer of the deed for his deed in this world by a sweetness he finds in his heart, a stronger feeling of relaxation and a joy in his eyes. If the person does not find these things, it means that something has entered upon his deed [and made it not correct and purely for Allâh’s sake].” [Ibn Qayyim, Madârij, Vol. 2, P. 68]