It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that one night we waited for the Prophet (peace and blessings be upon him) until it was nearly half of the night. He (peace and blessings be upon him) came and led the prayer. It is as if I am looking at the silver band and the gleam of his (peace and blessings be upon him) ring. In a narration of Abu Dawud it is: until half of the night had passed, and the rest has the same meaning.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1755