Allaah’s Remembrance Prescribed after Salah

Note: Raising one’s hands to make Du`a’ after performing the obligatory Salah is a Bid`ah (innovation in religion), because there is no evidence from the Qur’an or the Sunnah to support this, and the Prophet (peace be upon him) said, Anyone who introduces anything into this matter of ours (Islam) that is not part of it will have it rejected. alifta.com
It is of the Sunnah for a Muslim to say after each obligatory Salah, whether one is the Imam (the one who leads the congregational Salah), Ma’mum (a person being led by an Imam in Prayer) or Mufarid (a person who performs prayer alone) to say:

(i) ‘I ask Allaah for forgiveness.’ (three times)

(ii) ‘O Allaah, You are As-Salaam and from You is all peace, blessed are You, O Possessor of majesty and honour.’ [Sahih Muslim 1/414]

If one is Imam, one should turn facing the people. The Imam, those praying behind him, or a person offering Salah individually should say,

‘None has the right to be worshipped except Allaah, alone without partner, to Him belongs all sovereignty and praise and He is over all things omnipotent. O Allaah, none can prevent what You have willed to bestow and none can bestow what You have willed to prevent, and no wealth or majesty can benefit anyone, as from You is all wealth and majesty.’ [Sahih al-Bukhari 1/255, Sahih Muslim 1/414]

‘None has the right to be worshipped except Allaah, alone, without partner, to Him belongs all sovereignty and praise and He is over all things omnipotent. There is no might nor power except with Allaah, none has the right to be worshipped except Allaah and we worship none except Him. For Him is all favour, grace, and glorious praise. None has the right to be worshipped except Allaah and we are sincere in faith and devotion to Him although the disbelievers detest it.’ [Sahih Muslim 1/415]

After that, one is to say each of the following supplications thirty three times:

‘How perfect Allaah is, all praise is for Allaah, and Allaah is the greatest.’ (thirty-three times)

‘None has the right to be worshipped except Allaah, alone, without partner, to Him belongs all sovereignty and praise and He is over all things omnipotent.’ (One Time) [Sahih Muslim 1/418, Whosoever says this after every prayer will be forgiven his sins even though they be as the foam of the sea.]

It is recommended for Imam (the one who leads), Ma’mum (the one who follows), and Munfarid (the one who prays on his own) to recite

Ayat-ul-Kursy (the Qur’anic Verse of Allah’s Foot stool, Surah Al-Baqarah, 2:255)  [An-Nasaai, ‘Amalul Yawm-Yawm wal-Layl (hadith No.100), also Ibn As-Sunni (n.121). See also Al-Albanee Sahihul-Jaami As-Sagheer 5/339 and Silsilatul-Ahadeeth As-Saheehah 2/697 (no.972)]

inaudibly. After that,

Surah-Al-Ikhlas (the Qur’an, Surah 112),
Surah-Al-Falaq (the Qur’an, Surah 113), and
Surah-Al-Nas (the Qur’an, Surah 114)
Inaudibly after each obligatory Salah and repeat them three times after the Maghrib (Sunset) and Fajr (Dawn) Salahs. [Abu Dawood 2/86, An-Nasaai 3/68, see also Al-Albanee, Sahih At-Tirmidhi 2/8.]

‘None has the right to be worshipped except Allaah, alone, without partner, to Him belongs all sovereignty and praise, He give life and causes death and He is over all things omnipotent.’ (ten times after the maghrib and fajr prayers) [At-Tirmithi 5/515,Ahmad 4/227]

‘O Allaah, I ask You for knowledge which is beneficial and sustenance which is good, and deeds which are acceptable.’ (To be said afer giving salaam for the fajr prayer) [Ibn Majah and others. See Al-Albani, Sahih Ibn Mahjah 1/152 and Majma’uz-Zuwaid 10/111]

It is recommended for the Imam, Ma’mum, and Munfarid to recite these supplications audibly after each obligatory Salah in a low voice without disturbing others. It is authentically reported in the two Sahih on the authority of Ibn ‘Abbas (may Allah be pleased with them) that raising one’s voice in supplication after concluding the obligatory Salah was during the time of the Prophet (peace be upon him). Ibn ‘Abbas (may Allah be pleased with them) said, “I used to know when they finished the Salah by this (supplications as they were said aloud) if I heard them.”

Source : Fortess of the Muslim Compiled by Sa’id bin Wahf Al-Qahtani