Hadithcore
Mishkat al-Masabih, 3720

‘Abdallah b. ‘Amr reported God’s Messenger as saying, “If anyone gives his brother a look which frightens him, God will frighten him on the day of resurrection.” Baihaqi transmitted in <i>Shuab al iman</i>.

وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم: «من نَظَرَ إِلَى أَخِيهِ نَظْرَةً يُخِيفُهُ أَخَافَهُ اللَّهُ يَوْمَ الْقِيَامَةِ» . رَوَى الْأَحَادِيثَ الْأَرْبَعَةَ الْبَيْهَقِيُّ فِي «شُعَبِ الْإِيمَانِ» وَقَالَ فِي حَدِيثِ يَحْيَى هَذَا: مُنْقَطع وَرِوَايَته ضَعِيف

References1 variant
In-Book Reference
Book 18, Hadith 59