As for the report in the hadith of the migration (1) that the Prophet, may Allah bless him and grant him peace, came to Abū Bakr with his head covered in the midday heat, he did so on that occasion only to remain unnoticed; thus, he did it out of necessity.
Covering his head in this manner was not his usual practice. Anas did mention that he, may Allah bless him and grant him peace, frequently wore a head covering (2), but he would do this—and Allah knows best—only when needed because of the heat or similar circumstances. Moreover, covering the head in this manner is not the same as wearing a taylasān (3).
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Most of the clothing worn by the Prophet, may Allah bless him and grant him peace, and his Companions was woven from cotton, though they sometimes wore garments woven from wool or linen.
Abū al-Shaykh (4) al-Asbahānī (5) related, through an authentic chain of transmission, that Hābis ibn Ayyūb (6) said: Al-Salt ibn Rāshid came into the presence of Muhammad ibn Sīrīn wearing a woollen robe, a woollen waist-wrapper, and a woollen turban. Muhammad recoiled from him and said: “I think