question #2 Sahih Muslim 920a, Book 11, Hadith 8 : How do angels respond to the supplications made by people according to Islamic teachings?

The Messenger of Allah (may peace be upon came to Abu Salama (as he died). His eyes were fixedly open. He closed them, and then said: When the soul is taken away the sight follows it. Some of the people of his family wept and wailed. So he said: Do not supplicate for yourselves anything but good, for angels say” Amen” to what you say. He then said: O Allah, forgive Abu Salama, raise his degree among those who are rightly guided, grant him a successor in his descendants who remain. Forgive us and him, O Lord of the Universe, and make his grave spacious, and grant him light in it.