Sayyidina Abu Rafi (RA) narrated that Allah’s Messenger said to Sayyidina Abbas (RA), “O Uncle! shall I not join ties with you? Shall I not give you? Shall I not benefit you?” He said, “Of course, 0 Messenger of Allah!” So, he said, “0 Uncle! pray four raka’at. Recite in each raka’ah the Fatihat ul-Kitab and a surah and when you have finished the recital, say Allah u Akbar walhamduliLLAH wa subhanALLAH fifteen times before making the ruku. Then go into the ruku and repeat them ten times. Then raise your head and say the words ten times. Then go into prostration and repeat them ten times, and raise your head and say the words ten times. Then prostrate and say the words ten times, and (again) raise you head and repeat them ten times before you stand up. So, this is (in all) seventy five in each raka’ah and it is three hundred in all four raka’at. Even if your sins are like the sand praticles of Aalij, Allah will forgive them for you.” He (Sayyidina Abbas i said, “0 Messenger of Allah! Who can stand up for it every day?” He said, “If you cannot establish it every day, then observe it on Friday. And if you cannot do that every Friday then observe it every month.” And he did not cease to say that until he said, “Offer it once in a year.”