First of all, we would like to stress the fact that it has been authentically reported that the Prophet, peace and blessings be upon him, raised his hands in supplication during prayer. It was also reported that the Prophet (peace and blessings be upon him) sometimes made supplications after Prayer and raised his hands after making du`a’ and in other times he did not make supplications after the Prayer.
Dr. Marawan Shahin, Professor of Hadith and its Sciences, Faculty of Usul Ad-Din (Theology),Al-Azhar Univ. states: “It was reported that the Prophet (peace and blessings be upon him) made supplications after Prayer but he was not accustomed to do so after each Prayer. Thus, a Muslim is not required to do so after each Prayer. Consequently, one can sometimes do so and not to do so some other times following the guidance of the Prophet (peace and blessings be upon him) in this regard.”