It is narrated from Hazrat Jabir that the Holy Prophet (peace and blessings be upon him) forbade plastering the grave, and from sitting on it, and from building a structure over it.

Hazrat Anisah bint Zaid bin Arqam (may Allah be pleased with her) narrates that when Hazrat Zaid’s son, Hazrat Suwaid, passed away, a slave or bondwoman bought lime and (baked) bricks for him. Hazrat Zaid asked,“What do you intend to do with these things?”They replied,“I intend to build a structure over the grave and make it solid.”He said,“May you be ruined! Do not bring anything that has been touched by fire near this deceased.”

Hazrat Hasan bin Salih says that I heard Hazrat Isa bin Abi Azza prohibiting the plastering of graves; he says, "Do not plaster graves."

Hazrat Suwaid bin Ghaflah says that when I die, no one should cause me any discomfort, nor should anyone bring lime, baked bricks, or wood near me, and no woman should accompany me (in the funeral).

Hazrat Mughira states that Ibrahim disliked baked bricks.

Ibrahim says that (the Companions) disliked baked bricks in their graves.

Ibrahim says that they (the Companions) used to prefer unbaked bricks and disliked baked bricks, and they preferred bamboo and disliked other wood.