Sayyiduna Nu'man bin Bashir (may Allah be pleased with him) says: The sun was eclipsed in the time of the Messenger of Allah (peace and blessings be upon him), and he (peace and blessings be upon him) came to the mosque alarmed, dragging his garment. He (peace and blessings be upon him) remained engaged in prayer until the sun became bright. When the sun became bright, he (peace and blessings be upon him) said: "People think that the sun and the moon lose their light only for the death of some great person, but it is not so. The sun and the moon do not lose their light for anyone's death or life; rather, they are two of the signs of Allah. When Allah manifests Himself to anything of His creation, it humbles itself before Him. When you see them (eclipsed), pray like the obligatory prayer."
This is mursal: Abu Qilabah did not hear it from al-Nu'man bin Bashir; he narrated it only from a man from al-Nu'man, and that narration does not contain this last wording.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة الخسوف / 6335