Ruling on giving a patient medication to alleviate the pains of death

Question:
Is it permissible for us to give certain patients specific medications to alleviate the agony of death and its pains, knowing that these medications cause the patient to lose consciousness completely, and he may die during that sleep without being able to utter the testimony of faith at the time of death?

Answer:
If these medications may cause immediate death, no, it is not permissible.
As for if they are only to alleviate the pain, but do not cause death, and do not assist in the causes of death; then there is nothing wrong with it, if they are only to alleviate the pain.
As for medications that assist in extinguishing the soul and hastening the extinguishing of the soul, this is not permissible; because this is a matter of killing, and assisting in killing.
But if they are to alleviate the pains and facilitate the exit of the soul without assisting in the exit of the soul in death, but they assist in alleviating the pain or the removal of the pain; then there is nothing wrong with that.