It is reported from Abû Hurayrah – Allâh be pleased with him – that he said:
"Shall I not point you to comfortable proceeds?"
"And what is that o Abû Hurayrah?"
"Fasting in winter."
The Arabs used to refer to matters which were relatively easy to gain as being cool. In this narration, the relative ease of fasting in winter and its consequent reward is likened to acquiring war proceeds without the heat of violence.
It is reported from 'Umar – Allâh be pleased with him – that he said: "Winter is booty for the devout worshippers."
It is reported from 'Ubayd b. 'Umayr – Allâh have mercy on him – that he said, "It used to be said when winter came: O people of the Qur`ân, the night has become long so you can pray (more) and the day has become short for you to fast." (Abû Nu'aym, Hilyah Al-Awliyâ`.)
As with other experiences in this world, the Salaf used to be reminded of the hereafter when experiencing cold weather: It is reported from the famous worshipper Râbi'ah – Allâh have mercy on her – that she said, " I have never heard the adhân except that I remember the caller who will announce the Day of Resurrection, and I never see the falling snow except that I imagine the flying pages of the records of peoples deeds (on that day), and I never see swarms of locusts except that I think about the Great Gathering on the Last Day." (Ibn Al-Jawzî, Sifah Al-Safwah Vol. 2 p433.)
(hijab tip - Huda Shaka` and Sayings of the Salaf)