It is narrated on the authority of Jabir ibn 'Abdullah:There passed a bier and the Prophet (ﷺ) stood up for it and we also stood up along with him. We said: Messenger of Allah, that was the bier of a Jewess. Upon this he remarked: Verily, death is a matter of consternation, so whenever you come across a bier stand up.
وَحَدَّثَنِي سُرَيْجُ بْنُ يُونُسَ، وَعَلِيُّ بْنُ حُجْرٍ، قَالاَ حَدَّثَنَا إِسْمَاعِيلُ، - وَهُوَ ابْنُ عُلَيَّةَ - عَنْ هِشَامٍ الدَّسْتَوَائِيِّ، عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ مِقْسَمٍ، عَنْ جَابِرِ، بْنِ عَبْدِ اللَّهِ قَالَ مَرَّتْ جَنَازَةٌ فَقَامَ لَهَا رَسُولُ اللَّهِ صلى الله عليه وسلم وَقُمْنَا مَعَهُ فَقُلْنَا يَا رَسُولَ اللَّهِ إِنَّهَا يَهُودِيَّةٌ . فَقَالَ " إِنَّ الْمَوْتَ فَزَعٌ فَإِذَا رَأَيْتُمُ الْجَنَازَةَ فَقُومُوا " .
Muslim
The Book of Prayer - Funerals • Hadith 100