Whenever the Messenger of Allah ﷺ saw the new crescent moon, he would turn his face away from it.
حدثنا محمد بن العلاء أن زيد بن حباب أخبرهم عن أبي هلال
أن رسول الله ﷺ كان إذا رأى الهلال صرف وجهه عنه
No references are available.
[Its chain of transmission is daif] It is found in Marasil Abu Dawud, no. 528. The chain is disconnected (mursal). (Al-Mujam, 102, 103) Chapter on what one says when leaving one's house. (Tuhfah.)