Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) stood up to perform prayer and we also stood up with him. During the prayer, a Bedouin said: O Allah! Have mercy on me and on Muhammad (peace and blessings be upon him), and do not have mercy on anyone else along with us. When the Prophet (peace and blessings be upon him) finished the prayer, he said to that Bedouin: "You have made something vast, narrow." (The narrator says) The Prophet (peace and blessings be upon him) meant the mercy of Allah Almighty.
Hadith Referenceصحیح ابن حبان / كتاب الرقائق / 987
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الإرواء» (1/ 190 - 191): خ.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم، رجاله ثقات رجال الشيخين غير حرملة، فمن رجال مسلم.