It is narrated from Sayyiduna Anas (may Allah be pleased with him) that Sayyiduna Usayd bin Hudayr and Abbad bin Bishr (may Allah be pleased with them both) were with the Prophet (peace and blessings be upon him) on an extremely dark night. When they left, the staff of one of them lit up, and the two of them walked in its light. Then, when the two of them parted from each other, the staff of the other also lit up. This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.