No misfortune can happen on earth or in your souls but is recorded in a decree before We bring it into existence. Verily, that is easy for Allah (Asan Tarjuma Quran)
During the days when I used to study in a madrasa, an old wise man (Baba Ji) spent most of his time in the mosque. He would remain engaged in one worship or another all the time. It was the same season, severe winter. I saw that he was performing ablution (wudu) with ice-cold water and was smiling....