Reference: Lataa.if al-Ma’aarif – p376
Sulaym ibn ‘Aamir narrated:
When Winter would arrive, ‘Umar ibn al-Khattaab (radhi-yAllaahu ‘anhu) would be mindful to write to them (the Companions), advising them all:
“Indeed Winter has arrived, and it is an enemy, so prepare for it with wool, leather socks, and socks.
Use wool for under garments and outer garments, for indeed the cold is an enemy that enters quickly, and [yet] leaves ever so slowly.”
Commenting on this narration, Ibn Rajab said:
He would write [this advice] to the people of ash-Shaam after it had been conquered during his era. He was concerned about the Companions and others who had not previously experienced such cold – that they would be harmed by the cold of ash-Shaam. And that was from the fulfilment of his advice, his caring vigilance, his compassion and safeguarding of [all] his subjects.
