Sahih Muslim
Sahih Muslim 963 c
Supplicating for the deceased during the (funeral) prayer
Arabic hadith text
وَحَدَّثَنَاهُ إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، حَدَّثَنَا مُعَاوِيَةُ بْنُ، صَالِحٍ بِالإِسْنَادَيْنِ جَمِيعًا . نَحْوَ حَدِيثِ ابْنِ وَهْبٍ
Translation
A hadith like this has been narrated through another chain of transmitters.