1. It is a sin to leave out any Sunnat-e-Muakkadah Salaat.
2. Kindly find below our standard reply to similar queries.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai
FATWA DEPT.
Q: Is the wearing of a hat (Topi) proven from Hadith? Did Rasulullah
(Sallallaahu Alayhi Wasallam) and the Sahaaba wear the Topi?
A: Abu Kabsha (Radhiallaahu Ánhu) narrates that the hats of the companions
of Rasulullah (Sallallaahu Alayhi Wasallam) used to be round and spacious.
(Mirqaat vol.8 pg.246)
It is narrated by Tabrani on the authority of Ibn Umar (Radhiallaahu Ánhuma)
that Rasulullah (Sallallaahu Alayhi Wasallam) used to wear a white hat.
(Ibid)
Hassan Basri (Rahmatullah Alayhi) states that the people (Sahaaba –
Radhiallaahu Anhum) used to make Sajda (prostrate) upon their turbans and
hats. (Bukhari vol.1 pg.56; Rashidiyya)
Mullah Ali Qari (Rahmatulah Alayhi) states that the wearing of the hat has
become one of the salient symbols of Islam. (Mirqaat vol.8 pg.246) It is the
only outward and unique salient feature that distinguishes a Muslim from a
non-Muslim. No other community group or people wear the Muslim type hat.