Sunan Abi Da'ud · Hadith 5092
General Behavior (Kitab Al-Adab) - كتاب الأدب
حدثنا موسى بن إسماعيل، حدثنا أبان، حدثنا قتادة، أنه بلغه أن النبي صلى الله عليه وسلم كان إذا رأى الهلال قال " هلال خير ورشد هلال خير ورشد هلال خير ورشد آمنت بالذي خلقك " . ثلاث مرات . ثم يقول " الحمد لله الذي ذهب بشهر كذا وجاء بشهر كذا " .
Narrated Qatadah: When the Prophet of Allah (ﷺ) saw the new moon, he said: "a new moon of good and right guidance; a new moon of good and right guidance; a new moon of good and right guidance. I believe in Him Who created you" three times. He would then say: "Praise be to Allah Who has made such and such a month to pass and has brought such and such a month."
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).