´It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:` "The martyr does not feel the pain of being killed, except as any one of you feels a pinch."
Hadith Referenceسنن نسائي / كتاب الجهاد / 3163
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:ضعيف، إسناده ضعيف، ترمذي (1668) ابن ماجه (2802) انوار الصحيفه، صفحه نمبر 345
´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).”
Maulana Ataullah Sajid
Benefit: The aforementioned narration has been declared weak in its chain of transmission by our esteemed researcher, whereas other scholars have graded it as hasan (good). Furthermore, the researchers of (al-Mawsu‘ah al-Hadithiyyah) have declared its chain to be strong. For further details, see: (al-Mawsu‘ah al-Hadithiyyah, Musnad al-Imam Ahmad: 3/334/235) and al-Sahihah of al-Albani, no. 960. In any case, this too is a favor from Allah upon the martyr, that the process of the soul leaving the body is made easy for him, and this pain does not become unbearable for him.
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 2802