-- Punishment of Grave (things to avoid) --

-- Punishment of Grave (things to avoid) --

 Backbiting and Spreading Rumor

 Not Reciting Quran and Acting according to its orders

 Zina (adultery) 

 Interest (Riba)

 Urine on clothes and Calumnies (to make enmity between friends)

 As for the one whose cheek you saw being torn away, he was a liar and he used to tell lies, and the people would report those lies on his authority till they spread all over the world. So, he will be punished like that till the Day of Resurrection.

 The one whose head you saw being crushed is the one whom Allah had given the knowledge of Qur'an (i.e. knowing it by heart) but he used to sleep at night (i.e. he did not recite it then) and did not use to act upon it (i.e. upon its orders etc.) by day; and so this punishment will go on till the Day of Resurrection.

 And those you saw in the hole (like oven) were adulterers (those men and women who commit illegal sexual intercourse).

 And those you saw in the river of blood were those dealing in Riba (usury).

 One of them never saved himself from being soiled with his urine, while the other was going about with calumnies (to make enmity between friends).

Sahih al-Bukhari 1386