And last week we explained and we mentioned the gift from Rasulullah after we finish everything to make as many dua as possible and we mentioned three of them.
Many scholars said that this dua, say it before the salam, similarly after you say it, and some said no, after you make your taslim, then you say this dua.
Like for example, when he saw Abdullah ibn Umar, he put his hand on his shoulder and he told him, be in this dunya one of two, either a traveler or a passerby.