Musnad Abu Ya'la al-Mawsili 149:84

'Abd al-A'la narrated to us, Muhammad ibn Bahr narrated to us, Ibn Abi Dhi'b narrated to us, from al-Harith ibn 'Abd al-Rahman, from Abu Salamah ibn 'Abd al-Rahman, from 'A'ishah, who said: The Prophet, may Allah bless him and grant him peace, took my hand and pointed to the moon, then said: "O 'A'ishah, seek refuge in Allah from the evil of this *ghasiq* (darkness) when it settles."