Hadith on Sirat: Traverse over Hell thinner than a hair

Abu Sa’id al-Khudri reported: We said, “O Messenger of Allah, will we see our Lord?” The Messenger of Allah, peace and blessings be upon him, said, “Do you have trouble seeing the sun on a day without clouds?”

Abu Sa’id said, “I have come to know that the bridge over Hell is thinner than a hair and sharper than a sword.”

Source: Ṣaḥīḥ Muslim 183

Grade: Sahih (authentic) according to Muslim

عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ أَنَّهُ قَالَ قُلْنَا يَا رَسُولَ اللَّهِ أَنَرَى رَبَّنَا قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ هَلْ تُضَارُّونَ فِي رُؤْيَةِ الشَّمْسِ إِذَا كَانَ يَوْمٌ صَحْوٌ

قَالَ أَبُو سَعِيدٍ بَلَغَنِي أَنَّ الْجِسْرَ أَدَقُّ مِنْ الشَّعْرَةِ وَأَحَدُّ مِنْ السَّيْفِ

183 صحيح مسلم كتاب الإيمان باب معرفة طريق الرؤية