I heard the Messenger of Allah ﷺ say, "The believer dies with sweat on his brow."
أخبرنا محمد بن معمر قال حدثنا يوسف بن يعقوب قال حدثنا كهمس
سمعت رسول الله ﷺ يقول المؤمن يموت بعرق الجبين
Its isnad is sahih. Tirmidhi transmitted it, no. 982, and Ibn Majah, in the Book of Funerals, chapter on what has been said about the believer being rewarded during the agony of death, no. 1452, from the hadith of Abdullah bin Burayda, through this route. It is also in al-Kubra, no. 1955. See also the coming hadith numbered 1937.