It is narrated from Sayyiduna Ibn Amr, may Allah be pleased with him, that a man began to supplicate: "O Allah, forgive only me and Muhammad (peace be upon him)." The Noble Prophet (peace be upon him) said: "You have concealed this supplication from many people."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 7059
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد حسن .