It wasnarrated that 'Aishah said:
"When the Messenger of Allah (ﷺ)died, they differed as to whether his grave should have a niche or aditch in the ground, until they spoke and raised their voicesconcerning that. Then 'Umar said: 'Do not shout in the presenceof theMessenger of Allah (ﷺ), living or dead,' or words to thateffect. Sothey sent for both the one who made a niche and the onewho dug graveswithout a niche, and the one who used to make a nichecame and dug agrave with a niche for the Messenger of Allah (ﷺ),then he (ﷺ) wasburied."
English reference: Vol. 1, Book 6, Hadith 1558
Arabic reference: Book 6, Hadith 1625