Not graded
Musnad Ahmad 9057
Narrator:Abu Hurayrah
وَقَالَ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ جَلِيسُ الْمَسْجِدِ عَلَى ثَلَاثِ خِصَالٍ أَخٍ مُسْتَفَادٍ أَوْ كَلِمَةٍ مُحْكَمَةٍ أَوْ رَحْمَةٍ مُنْتَظَرَةٍ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ahmad (No. 9057).