Answered by: Maulana Syed Johir Miah
Is it permissible to wear a vest that is sleeveless and read salaah? If permissible, is it disliked?
In the name of Allah, the Most Gracious, the Most Merciful
It is reprehensible (Makrooh Tahreemi) to wear a half sleeve or sleeveless shirt ( Kurta or its like) and perform Salaah.
And if before salah due to some work a person rolls up his sleeves or for wudu or the style of the upper garment is such that it is sleeveless, then there is a difference of views in its Karahah (being disliked).
It is Makrooh Tahreemi to perform Salaah with the sleeves folded.
Wearing half sleeve qamis is not established from Prophet (صلى الله عليه وسلم) Such qamis is contrary to Sunnah and to wear such qamis and pray is contrary to Sunnah.
Only Allah knows best
Written by Maulana Syed Johir Miah
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 Ahsanul Fatwa 406/3
 Fatawaa Mahmoodiyyah, 653/6
 Fatawaa Mahmoodiyyah, 654/6