Ruling on returning the greeting during the Friday sermon

Question:
May Allah prolong your life. If a person is there and the imam is delivering the sermon, and he greets him,?

Answer:
he should gesture to him. There is no greeting during the sermon, no greeting, and no talking.

Question: And if he is blind,?

Answer: if you take his hand, there is no harm, but do not speak to him; because the Messenger of Allah (peace and blessings be upon him) commanded listening attentively, and he said: So this is enjoining what is right, and along with this, there is a prohibition against this.
Likewise, it was said in the authentic hadith: One should listen attentively in such a case. If someone greets him, he should gesture to him. If he places his hand in his hand when he extends it, there is no harm, but without speaking. He should inform him after the sermon ends that this is not appropriate. If he enters while the imam is delivering the sermon, he should not greet, nor greet the person next to him. If he sneezes, he should praise Allah in his heart and not raise his voice.