8 Prayer (Kitab Al-Salat): Detailed Injunctions about Witr
(509)Chapter: Regarding Supplication (Ad-Du'a)
'Asma daughter of Yazid reported the Prophet (ﷺ) as saying:
"Allah's Greatest Names is in these two verses: "And your Ilaah (God) is One Ilaah (God), none has the right to be worshipped but He, the Ever-Merciful, the Mercy-Giving' and the beginning of Surah Al 'Imran, "A.L.M Allah, there is no deity but He, the Living, the Eternal."
Grade : Hasan (Al-Albani)
Reference : Sunan Abi Dawud 1496
In-book reference : Book 8, Hadith 81
English translation : Book 8, Hadith 1491