Mukhtasar Bukhari

´Sayyiduna Abu Hurairah (may Allah be pleased with him) said that` once the Messenger of Allah (peace and blessings of Allah be upon him) stood up to pray and we also stood up with him. Meanwhile, a Bedouin started supplicating during the prayer, saying: "O Allah! Have mercy on me and on Muhammad (peace be upon him), and do not have mercy on anyone else." When the Prophet (peace be upon him) finished the prayer with salam, he said to the Bedouin: "You have made something vast (i.e., Allah's mercy) restricted."