Musannaf Ibn Abi Shaybah

An old man from Khurasan who was called Mika'il said: When Hazrat Umar would stand for prayer at night, he would make this supplication: "You know my standing and you also know my need. O Allah! Return me from Your presence in such a state that my need is fulfilled, successful, and accepted—accepted for me. Indeed, You have forgiven me and You have had mercy on me." Then, when he would complete his prayer, he would say: "O Allah! I have not seen anything in the world that is everlasting, nor have I seen any condition that always remains straight. O Allah! Make me such that I speak with knowledge and remain silent with wisdom. O Allah! Do not increase the world for me so much that I become rebellious, nor make it so little for me that I forget You, for that which is little and sufficient is better than that which is abundant and leads to heedlessness."