Musannaf Ibn Abi Shayba 21:626

Waki' narrated to us, Zakariya narrated to us, from Abu Ishaq, from Abu Ubaydah, from Ali, may Allah be pleased with him, who said: "If one of you sees the crescent moon, do not raise your head toward it. Is it not sufficient for one of you to say: 'My Lord and your Lord is Allah'?"