It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "This is Jibril (peace be upon him); he has come to teach you your religion." Then he described the times of prayer, then mentioned that he led Maghrib when the sun had set, and then, when he came the next day, he led Maghrib at the same time, when the sun had set.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1722