Humaid said:
"Anas was asked: 'Did the Prophet (ﷺ) use a ring?' He said: 'Yes. One night he delayed the later 'Isha' prayer, until almost halfway through the night. When he prayed the Prophet (ﷺ) turned his face toward us and said: 'You are still in a state of prayer so long as you waiting for it.'" Anas said: 'It is as if I can see the luster of his ring.' According to the narration of 'Ali - that is, Ibn Hujr - "until halfway through the night." (DE)
English reference (DE): Vol. 1, Book 6, Hadith 540 (DE)
Arabic reference (DE): Book 6, Hadith 544 (DE)