Sahih al-Bukhari 6167

Qatada related from Anas that a man from the desert Arabs came to the Prophet, may Allah bless him and grant him peace, and said, "Messenger of Allah, when will the Final Hour come?" He said, "Bother you! What have you prepared for it?" He said, "I have prepared nothing for it, except that I love Allah and His Messenger." He said, "You will be with those you love." Anas said, "We asked, 'And us as well?' He answered, 'Yes. That day we were very happy indeed. A slave belonging to al-Mughira passed by and he was of my generation. The Prophet, may Allah bless him and grant him peace, said, 'If this one should live long, he will not become senile before the Final Hour comes.'" Shu'ba has it in brief from Qatada who said, "I heard Anas report from the Prophet, may Allah bless him and grant him peace..."