This is a warning and threat from Allah to those who accuse chaste women, who never even think of anything effecting their chastity since they are good believers. The Mothers of the believers are more entitled to be included in this category than any other chaste woman, especially the one who was the reason for this Ayah being revealed: ‘A’ishah bint As-Siddiq, may Allah be pleased with them both. All of the scholars agree that whoever slanders her or makes accusations against after what has been said in this Ayah, is a disbeliever, because of his being obstinate with the Qur’an. The same ruling applies to all of the Mothers of the believers.

{are cursed in this life and in the Hereafter,} This is like the Ayah:

{Verily, those who annoy Allah and His Messenger,} 33:57

‘Abdur-Rahman bin Zayd bin Aslam said, “This is about ‘A’ishah, and whoever does anything similar nowadays to Muslim women, the same applies to him, but ‘A’ishah is the one who is primarily referred to here.”

Ibn Abi Hatim recorded that Abu Hurayrah said that the Messenger of Allah said:

«Because of the way a person will dispute with his Lord. He will say, "O Lord, did you not protect me from doing wrong?" Allah will say, "Of course," The person will say, "I will not accept for anyone to give testimony concerning me except myself." Allah will say, "You are sufficient as a witness against yourself." Then a seal will be put upon his mouth and it will be said to his faculties, "Speak." So they will speak about his deeds. Then he will be permitted to speak, and he will say, "Away with you! I was only speaking in your defence!"»

This was recorded by Muslim and An-Nasa'i

Ibn ‘Abbas said,

{Dinahum} “Meaning ‘their account.’ Every time Dinahum appears in the Qur’an it means 'their account.'” This was also the view of other scholars.

means, His promise, His threat and His reckoning are all just and there is no unfairness in them.