It is narrated from the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her): "When the Messenger of Allah (peace and blessings be upon him) got up at night (for prayer), his miswak and his water for ablution were placed ready for him (peace and blessings be upon him)."
No one narrated this hadith from Sa'd bin Hisham (may Allah have mercy on him) except Zurarah (may Allah have mercy on him), and no one from Zurarah (may Allah have mercy on him) except Bahz (may Allah have mercy on him); and Hammad bin Salamah (may Allah have mercy on him) is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الألف / 502
Hadith Takhrij«أخرجه أبو داود فى «سننه» برقم: 56، والطبراني فى «الأوسط» برقم: 4404»