Sayyiduna Nu’man bin Bashir (may Allah be pleased with him) narrates:“I have the most knowledge regarding this, that is, about the ‘Isha prayer. The Prophet (peace and blessings of Allah be upon him) used to offer it when the third night’s moon would set.”

This same narration is also transmitted with another chain regarding the Prophet Muhammad (peace be upon him), however, in it are the words: (the narrator is in doubt) the crescent of the third night or the crescent of the fourth night (would set). Some other narrators have also transmitted it on the authority of Sayyiduna Nu'man (may Allah be pleased with him), and in it, they have narrated the words, "the crescent of the third night."