Recite ONCE – After every Fard Salah
[Abu Dawud 2:62, Ibn Majah 2:1267,At-Trimidhi 5:515,Ahmed 5:360]
Alla'humma antas salaam wa min kas salaam taba rakta ya dhal ja laa li wal ik raam
O Allah! You are peace and from You comes peace. Blessed are You, O owner of Majesty and Honour
On the authority of Aisha (R.A) it is reported that whenever the Messenger of Allah (S.A.W) made the Taslim, he would recite (this Dua).
[Abu Dawud no. 1512 and An-Nasa’i no. 1339]