The robbers have used a knife to kill the man after he has refused to give his money – around 1,000 Afghanis – and his mobile phone.
Family members of the victim say that the man was killed when he went out to buy medicine from a pharmacy for his sick wife.
The victim has lost his brother, father, and mother in different incidents in the past and has left two children and a sick wife behind who are living at a rental house.
Kabul police say that the case is under investigation but they have not found the culprits yet.
Criminal incidents have tremendously increased in the capital Kabul where a man can get killed for a smartphone or for a small amount of money.
This comes as Kabul residents are making their daily commutes in fear.