5. Ali ibn Muhammad in a marfu‘ manner has narrated the following: “About a man who performs Salah (prayer) wearing a pant (pajama) with no other clothes, abu ‘Abd Allah (a.s.), has said, ‘
He is to secure it with a drawstring to his shoulder.’”
Man Lā Yaḥḍuruh al-Faqīh #786"He should untie the waistband and place it over his shoulder and pray. If he has a sword but no garment, he should hang the sword around...
Al-Kāfi #1532“I once asked one of the two Imam, ‘Alayhim al-Salam, about a man who performs Salah (prayer) in one shirt or a gown of a single layer or...