How a sick person prays and indicating with the index finger

Question:
Here are some issues related to the jurisprudential rulings for the sick. He says: If a sick person is unable to pray standing, sitting, or on his side, is it valid for the sick person to pray by nodding with his eye during bowing, prostration, and standing, or by pointing with his index finger?

Answer:
Pointing with the index finger? No, this has no basis. One does not point with the index finger or with the hand. This is something the common people have inherited; they say, "Pray with seven [movements]." They say, "No, what is the basis?"
So the sick person prays standing if he is able. If he is not able, he prays sitting. If he is not able, he prays on his side. If he is not able, he lies on his back with his feet toward the qiblah. This is what the evidence has come with.
The majority hold that if one is unable to indicate with his head, the indication is done with the head, not with the finger or the hand. He indicates with his head for the bowing and the prostration, and his indication for the prostration is lower than his indication for the bowing. If he is unable to indicate with his head, some jurists say that he prays with his eyes, by blinking. In reality, there is no evidence for this, but they said that he prays by blinking. Allah knows best. If a person does this, it is hoped that Allah will accept it from him.