Sayyiduna al-Irbad bin Sariyah (may Allah be pleased with him) was an aged elder among the Companions of the Messenger of Allah (peace and blessings be upon him), and he loved that Allah Almighty should take him to Himself (soon), so he used to supplicate: "O Allah, my age has grown great and my bones have become weak, so take me to Yourself." Sayyiduna al-Irbad (may Allah be pleased with him) said: One day, while I was in the mosque of Damascus, a most handsome young man appeared before me, wearing a green cloak. He asked: "What is this supplication that you are making?" I said: "My nephew, how should I supplicate?" He said: "Say: 'O Allah, make (my) deeds good and bring (me) to the appointed term.'" I asked: "Who are you, may Allah have mercy on you?" He said: "I am Riba'il, who removes grief from the hearts of the believers."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15707