Musannaf Ibn Abi Shaybah

Hazrat Yahya bin Rashid narrates that we performed Hajj. When we had completed our sacrifice, we said: If we present ourselves before Hazrat Ibn Umar (may Allah be pleased with them), he might narrate a hadith to us. So we went to him, and he came to us and sat among us. Then he remained silent so that we might ask him something, and we remained silent so that he might narrate hadiths to us. When the silence became prolonged, he said: What is the matter with you that you do not speak? Will you not recite these words? "Allah is free from all defects, and all praise is for Allah, and there is no deity except Allah, and Allah is the Greatest, and there is no power to avoid sins nor strength to do good except with Allah's help." The reward for a good deed is from ten times up to seven hundred times. So if you increase in goodness, Allah will also grant you more reward.