It is narrated from Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Give glad tidings to those who walk to the mosques in the darkness that on the Day of Resurrection they will have pulpits of light, on the day when people will be terrified but they will not be terrified."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 8094