Is it permissible for a person in Ihram to wear a shirt or a connected upper garment?
Chapter on What the Muhrim Must Avoid and What is Permissible for Him
Al-Mughni
Book of Hajj
Primary text
There is no objection to a person in Ihram draping a shirt (qamis) over themselves, wearing it as an upper garment (irtida'), or wearing a connected upper garment (rida' muwaṣṣal), provided it is not tied (i.e., fastened at the edges). The prohibition is specifically against sewn items placed directly on the limb (i.e., sewn to fit the body part).