The ruling on shaking hands after the imam’s closing salam

Question:
We often find that some of the worshippers, after the imam concludes the prayer with the salam, extend their hand to greet the person on their right and left, saying, “May Allah accept it,” or “May it be accepted.” Is this action permissible? Please inform us, may Allah reward you.

Answer:
Shaking hands after the imam’s salam has no basis. Rather, when he concludes the prayer, he says: “I seek forgiveness from Allah” three times, then he says: “O Allah, You are Peace, and from You comes peace. Blessed are You, O Owner of Majesty and Honor.” Then he says: “There is no god but Allah alone, with no partner. His is the dominion and His is the praise, and He is over all things competent,” once or repeating it three times. Then he says: “There is no power and no strength except with Allah. There is no god but Allah, and we worship none but Him. His is the blessing, His is the favor, and His is the good praise. There is no god but Allah, sincere to Him in our religion, even if the disbelievers dislike it. O Allah, there is no one who can prevent what You have given, and there is no one who can give what You have withheld, and the wealth of the wealthy cannot benefit anyone from You.” These are the authentic hadiths from the Messenger of Allah (peace and blessings be upon him).
It is recommended for him to add after Maghrib and Fajr: “There is no god but Allah alone, with no partner. His is the dominion and His is the praise, and He is over all things competent,” ten times. This is an addition after Maghrib and after Fajr. Then he proceeds with the glorification, praise, and declaration of Allah’s oneness thirty-three times each: Subhan Allah (Glory be to Allah), Alhamdulillah (Praise be to Allah), and Allahu Akbar (Allah is the Greatest), thirty-three times each after the five daily prayers. He concludes the hundred with the statement: “There is no god but Allah alone, with no partner. His is the dominion and His is the praise, and He is over all things competent.” This is recommended after every one of the five daily prayers.
Then he recites the Verse of the Throne: [al-Baqarah:255], then he recites: [al-Ikhlas:1] and the two chapters of protection. After Maghrib and Fajr, he repeats them three times at the beginning of the day and the beginning of the night: [al-Falaq:1], [al-Nas:1], three times at the beginning of the morning and the beginning of the night after Maghrib and after Fajr.
As for raising the hands after the salam, it has no basis, neither for the imam nor for the one praying behind him. He does not raise his hands in supplication, nor does he shake hands when he concludes the prayer. Rather, he performs the prescribed dhikr. Likewise, after a voluntary prayer, he says: “I seek forgiveness from Allah, I seek forgiveness from Allah, I seek forgiveness from Allah. O Allah, You are Peace, and from You comes peace. Blessed are You, O Owner of Majesty and Honor.” However, if he raises his hands after a voluntary prayer on some occasions, there is nothing wrong with it, as it is narrated from the Prophet (peace and blessings be upon him) that he raised his hands on some occasions after a voluntary prayer. As for the obligatory prayer, it is not prescribed.