Chapter 147
Remembrance 1 from Chapter 147
What to say upon seeing the new moon and what to say on seeing the moon
Arabic
Romanisation
Allāhumma ahillahu ‘alaynā bi-l-yumni wa-l-īmān, wa-s-salāmati wa-l-Islām, Rabbī wa Rabbuka-llāh.
Context
WE RELATE FROM the Musnad of ad-Dārimī and the book of at-Tirmidhī, from Ṭalḥah ibn ‘Ubaydullāh 
who reported that when the Messenger of Allah 
saw the new moon he said: “O Allah, make it rise over us with good fortune, faith, peace, and submission. My Lord and your Lord is Allah.” [1].At-Tirmidhī describes this hadith as ḥasan.
References
[1] At-Tirmidhī (3447), ad-Dārimī (2/4), and al-Futūḥāt ( 4 / 329 ). Ibn Ḥajar grades it as ḥasan.