It is narrated from Sayyiduna Abdullah bin Sarjis (may Allah be pleased with him) that he said: "O Messenger of Allah (peace and blessings be upon him), seek forgiveness for me." Asim al-Ahwal (may Allah have mercy on him) said: I asked: "Did the Messenger of Allah (peace and blessings be upon him) pray for forgiveness for you?" He replied: "Yes, and for you too," and then he (peace and blessings be upon him) recited this verse: "And seek forgiveness for your sin and for the believing men and the believing women."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Hudbah bin al-Minhal, the judge, except Abd al-Malik (may Allah have mercy on him), and Hilal (may Allah have mercy on him) is alone in transmitting it."
Hadith Referenceالمعجم الأوسط / باب الألف / 1510
Hadith Takhrij«أخرجه مسلم فى «صحيحه» برقم: 2346، وابن حبان فى «صحيحه» برقم: 6299، والنسائي فى «السنن الكبرى» برقم: 10054، 10183، 10182، 11432، وأحمد فى «مسنده» برقم: 21102، 21110، 21112، 21106، وأبو يعلى فى «مسنده» برقم: 1563، وعبد الرزاق فى «مصنفه» برقم: 20540، والترمذي فى «الشمائل» برقم: 23، والطبراني فى «الأوسط» برقم: 1016»