أَخْبَرَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا أَبُو عَامِرٍ، عَنْ عَبْدِ اللَّهِ بْنِ جَعْفَرٍ، عَنْ إِسْمَاعِيلَ بْنِ مُحَمَّدٍ، عَنْ عَامِرِ بْنِ سَعْدٍ، ‏:‏ أَنَّ سَعْدًا، لَمَّا حَضَرَتْهُ الْوَفَاةُ قَالَ ‏:‏ الْحَدُوا لِي لَحْدًا، وَانْصِبُوا عَلَىَّ نَصْبًا كَمَا فُعِلَ بِرَسُولِ اللَّهِ صلى الله عليه وسلم ‏.‏

It was narrated from 'Amir bin Sa'd that when Sa'd was dying he said: "Make a niche for me in the side of the grave and set up (bricks) over me as was done for the Messenger of Allah." Translation Not Available

Book Ref: Sunan An Nisai Book 21 Hadith 2008
Web Ref:  Sunan An Nisai Vol 3 Book 21 Hadith 2010