(13) باب اسْتِحْبَابِ صَلاَةِ الضُّحَى وَأَنَّ أَقَلَّهَا رَكْعَتَانِ وَأَكْمَلَهَا ثَمَانِ رَكَعَاتٍ وَأَوْسَطَهَا أَرْبَعُ رَكَعَاتٍ أَوْ سِتٌّ وَالْحَثِّ عَلَى الْمُحَافَظَةِ عَلَيْهَا
A hadith like this has been narrated by Abu Huraira by another chain of transmitters. (ID)
Reference (ID): Sahih Muslim 721 b (ID)
In-book reference (ID): Book 6, Hadith 103 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1559 (ID)