Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:16773Abū al-Ḥusayn b. Bishrān > Abū Jaʿfar al-Ruzāz > Aḥmad b. al-Walīd > Abū Aḥmad al-Zubayrī > Sufyān > Qays b. Muslim > ʿAbd al-Raḥman b. Abū Laylá > Saʿīd b. ʿUbayd > Qām Khaṭīb

[Machine] We will be martyred tomorrow, so do not wash our clothes or shroud us except in the clothing we are currently wearing. This is what these people said, and we have narrated in the Book of Funerals from Al-Sha'bi that Ali, ﷺ , prayed over Ammar ibn Yasir and Hashim ibn 'Utbah.  

البيهقي:١٦٧٧٣أَخْبَرَنَا أَبُو الْحُسَيْنِ بْنُ بِشْرَانَ أَنْبَأَ أَبُو جَعْفَرٍ الرُّزَازُ ثَنَا أَحْمَدُ بْنُ الْوَلِيدِ ثَنَا أَبُو أَحْمَدَ الزُّبَيْرِيُّ ثَنَا سُفْيَانُ عَنْ قَيْسِ بْنِ مُسْلِمٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى عَنْ سَعِيدِ بْنِ عُبَيْدٍ أَنَّهُ قَامَ خَطِيبًا فَقَالَ

إِنَّا مُسْتَشْهِدُونَ غَدًا فَلَا تَغْسِلُوا عَنَّا الثِّيَابَ وَلَا تُكَفِّنُونَا إِلَّا فِي ثَوْبٍ كَانَ عَلَيْنَا كَذَا قَالَ هَؤُلَاءِ وَقَدْ رَوَيْنَا فِي كِتَابِ الْجَنَائِزِ عَنِ الشَّعْبِيِّ أَنَّ عَلِيًّا ؓ صَلَّى عَلَى عَمَّارِ بْنِ يَاسِرٍ وَهَاشِمِ بْنِ عُتْبَةَ