the angels say “Amin” to what you say.” (1) For it was a custom of the Age of Ignorance that, when calamities befell them, people would invoke evil upon themselves, saying, “O my destruction! My back is broken!” and similar expressions familiar to them. So the Prophet, peace and blessings be upon him, said to the household of Abu Salamah: “Do not supplicate against yourselves except for good, for the angels say ‘Amin’ to what you say.” A supplication to which the angels say “Amin” is surely deserving of acceptance—especially in such a state, when a person is afflicted, humbled, submissive, and in need of his Lord, knowing that none can save him from this affliction but Allah. It is therefore especially worthy of acceptance, and for this reason the angels have been made to say “Amin” to his supplication.
Then the Prophet, peace and blessings be upon him, said: “O Allah, forgive Abu Salamah, raise his rank among the rightly guided, make his grave spacious for him, illuminate it for him, and succeed him among those he has left behind.” These are tremendous supplications, better than this world and all that is in it. He supplicated for him with these five prayers. As for the last of them, we know that it was fulfilled: Allah succeeded him among those he left behind when He decreed that His Prophet, peace and blessings be upon him, should marry Umm Salamah, and that Abu Salamah’s children should become stepchildren of the Messenger of Allah, peace and blessings be upon him. As for what we do not know—his forgiveness, the raising of his rank among the rightly guided, the spaciousness of his grave, and its illumination—we hope that it was so.
As for the rational proof, it is to prevent the deceased from appearing disfigured. If the gaze is fixed, this disfigures his appearance, so whoever looks at him will find him disfigured. Closing his eyes removes this disfigurement.
The scholars also said that it prevents vermin from reaching the pupil of the eye. But this reasoning is far-fetched, because the deceased will not remain long enough for them to prevail