´It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:` “The martyr does not feel anything more when he is killed than one of you feels if he is pinched (by a bug).”
Hadith ReferenceSunan Ibn Majah / The Chapters on Jihad / Hadith: 2802
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:ضعيف, إسناده ضعيف, ترمذي (1668) نسائي (3163), انوار الصحيفه، صفحه نمبر 480