Ibn al-Qayyim said:
"Al- Junayd said: 'The journey from this world to the Hereafter is smooth and easy for the believer, but leaving ordinary life for the sake of Allah is difficult. The journey from the ego (nafs) to Allah is extremely difficult, and patience (sabr) in Allah is even more difficult."
He was asked about patience, so he replied: 'It is to swallow bitterness without frowning.'
Dhu'l-Nun al-Misri said: 'Patience is to distance yourself from opposing [the truth], to remain calm when engulfed with calamities, and to display sufficiency when poverty occupies your daily life.'
It has been said: 'Patience is to face affliction with the best conduct.'
It has been said: 'It is to absorb affliction without displaying complaint.'
It is said: 'It is accustoming the soul to the onslaught of adversities.'
It is said: 'It is to settle down with adversities in good companionship, in the same manner as one settles down with well-being.'
And 'Amr ibn 'Uthman said: 'It is standing firm with Allah and meeting tribulations with magnanimity and welcome.'