And Allah Most High has said:

“Have you not seen those who were told, ‘Restrain your hands, establish prayer, and give zakah’? Then, when fighting was prescribed for them, a group of them feared people as they feared Allah, or even more, and said, ‘Our Lord, why have You prescribed fighting for us? If only You would grant us respite for a little while!’”
Surah al-Nisā’, 77

These people had resolved to fight in Allah’s cause and had loved the prospect, yet when they were put to the test, they hated it and fled from it. But how can the pain of fighting compare with the pain of the Fire and Allah’s punishment, which no one can bear?

Something similar is related about Sumnūn al-Muhibb, who used to say:

I have no desire for anything but You;
So test me however You will.

He was immediately afflicted with urinary retention—that is, he was unable to pass urine. He would then go around the schools, distributing walnuts to the children and saying, “Pray for your lying uncle.”

Abū Nu‘aym al-Asbahānī related from Abū Bakr al-Wāsitī that he