The Messenger of Allah said: "Whoever performs the funeral prayer then he will get a reward equal to a Qirat. Whoever follows it until it is buried then he will get a reward equal to two Qirat, one of them, or the least of them, is similar to Uhud (mountain)." This was mentioned to Ibn Umar, so he sent a message to Aishah to ask her about that, and she said: "Abu Hurairah has told the truth." So Ibn Umar said: "We have missed many Qirat." (Using translation from Tirmidhī 1040)
قَالَ رَسُولُ اللهِ ﷺ مَنْ صَلَّى عَلَى جِنَازَةٍ فَلَهُ قِيرَاطٌ وَمَنْ تَبِعَهَا حَتَّى يُقْضَى دَفْنُهَا فَلَهُ قِيرَاطَانِ أَحَدُهُمَا أَوْ أَصْغَرُهُمَا مِثْلُ أُحُدٍ قَالَ أَبُو سَلَمَةَ فَذَكَرْتُ لِابْنِ عُمَرَ فَتَعَاظَمَهُ فَأَرْسَلَ إِلَى عَائِشَةَ فَقَالَتْ صَدَقَ أَبُو هُرَيْرَةَ فَقَالَ ابْنُ عُمَرَ لَقَدْ فَرَّطْنَا فِي قَرَارِيطَ كَثِيرَةٍ