The best of guidance is the guidance of our Prophet Muhammad (peace and blessings of Allaah be upon him). When he said the salaam (at the end of prayer) he would pray for forgiveness three times, but he did not wipe his face with his hands after saying the salaam or after saying du’aa’.
It was narrated that Thawbaan (may Allaah be pleased with him) said: When the Messenger of Allaah (peace and blessings of Allaah be upon him) had finished his prayer, he would pray for forgiveness three times, and say: “Allaahumma anta al-salaam wa minka al-salaam, tabaarakta yaa dhaa’l-jalaali wa’l-ikraam (O Allaah, You are al-Salaam (the One Who is free from all defects and deficiencies) and from You is all peace, blessed are You, Possessor of majesty and honour)”. Narrated by Muslim (591).