Chapter 147
Remembrance 2 from Chapter 147
What to say upon seeing the new moon and what to say on seeing the moon
Arabic
Romanisation
Allāhu akbar, Allāhumma ahillahu ‘alaynā bi-l-amni wa-l-īmān, wa-s-salāmati wa-l-Islām, wa-t-tawfīqi limā tuḥibbu Rabbanā wa tarḍā, Rabbunā wa Rabbuka-llāh.
Context
We relate in the Musnad of ad-Dārimī from Ibn ‘Umar 
who related that when the Messenger of Allah 
saw the new moon he said: “Allah is greater. Allah, make it rise over us with safety, faith, peace, Islam, and the ability to do what You like, O Lord, and what You are pleased with. My Lord and your Lord is Allah.” [2].
References
[2] Ad-Dārimī (2/403). Ibn Ḥajar states that there is some weakness in this hadith’s chain, but that it is strengthened by the previous hadith.