Riyad as-Salihin
Riyad as-Salihin 1228
Supplication at the Sight of the Crescent (At the outset of Every Lunar Month)
Arabic hadith text
عن طلحة بن عبيد الله رضي الله عنه أن النبي صلى الله عليه وسلم كان إذا رأى الهلال قال: "اللهم أهله علينا بالأمن والإيمان والسلامة والإسلام، ربي وربك الله، هلال رشد وخير" ((رواه الترمذي وقال: حديث حسن)).
Translation
Talhah bin Ubaidullah (May Allah be pleased with him) reported
At the sight of the new moon (of the lunar month), the Prophet (ﷺ) used to supplicate: "Allahumma ahillahu 'alaina bil-amni wal-iman, was-salamati wal-Islam, Rabbi wa Rabbuk-Allah, Hilalu rushdin wa khairin (O Allah, let this moon appear on us with security and Iman; with safety and Islam. (O moon!) Your Rubb and mine is Allah. May this moon be bringing guidance and good)."[At- Tirmidhi].