“The Messenger of Allah ﷺ said: ‘Your brother Najashi has died, so offer the funeral prayer for him.” Then he stood and we prayed behind him. I was in the second row and two rows prayed for him.” (Using translation from Ibn Mājah 1535)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ إِنَّ أَخَاكُمْ النَّجَاشِيَّ قَدْ مَاتَ فَقُومُوا فَصَلُّوا عَلَيْهِ قَالَ فَصَفَفْنَا فَصَلَّيْنَا عَلَيْهِ كَمَا تُصَلُّونَ عَلَى الْمَيِّتِ