Saeed bin Harith reported,

We entered upon Jabir bin Abdullah while he was praying in a single garment wrapped around himself, with his cloak near enough that he could have reached it had he wanted. When he finished the prayer, we asked him about this, and he said, "I only do this so that fools like you may see me and spread the news of a concession that the Messenger of Allah ﷺ granted."Then Jabir said, "I went out with the Messenger of Allah ﷺ on one of his journeys. I came to him one night while he was praying in a single garment, and I had only one garment on me, so I wrapped myself in it and stood beside him."He said, "Jabir, what is this wrapping? When you pray and have only one garment, if it is wide, wrap yourself in it, and if it is narrow, tie it around your waist."

Ahmad 14518

Sahih

حدثنا أبو عامر حدثنا فليح حدثنا

سعيد بن الحارث قال

دخلنا على جابر بن عبد الله وهو يصلي في ثوب واحد ملتحفا به ورداؤه قريب لو تناوله بلغه فلما سلم سألناه عن ذلك فقال إنما أفعل هذا ليراني الحمقى أمثالكم فيفشوا على جابر رخصة رخصها رسول الله ﷺ ثم قال جابر خرجت مع رسول الله ﷺ في بعض أسفاره فجئته ليلة وهو يصلي في ثوب واحد وعلي ثوب واحد فاشتملت به ثم قمت إلى جنبه قال يا جابر ما هذا الاشتمال إذا صليت وعليك ثوب واحد فإن كان واسعا فالتحف به وإن كان ضيقا فاتزر به

أحمد 14518صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Jabir bin Abdullah
Numbering
Darussalam 14518
Ahmad 14518