The Prophet ﷺ said, "The believer dies with sweat on his brow."
حدثنا يحيى بن سعيد عن المثنى بن سعيد عن قتادة
عن النبي ﷺ قال إن المؤمن يموت بعرق الجبين
Its isnad is sahih. It is found in Tirmidhi 3/302, no. 982, where he graded it hasan, in Nasai 4/6, no. 1828, and in Ibn Majah 1/467, no. 1452. Hakim graded it sahih in 1/361, and Dhahabi agreed with him. All of them have it in the chapters on funerals.