It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was asked; it was said to him: "One of us may reach the morning without having prayed the Witr, because sleep overcame him?" He (peace and blessings be upon him) said: "Let him pray the Witr when morning comes."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Zayd bin Aslam with a connected chain except his son Abd al-Rahman, whereas a group narrated it as a maqtu' (broken-off) report from Ata bin Yasar (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الميم / 8842
Hadith Takhrij«أخرجه الحاكم فى «المستدرك» برقم: 1131، وأبو داود فى «سننه» برقم: 1431، والترمذي فى «جامعه» برقم: 466، 465، وابن ماجه فى «سننه» برقم: 1188، والبيهقي فى «السنن الكبرى» برقم: 4605، والدارقطني فى «سننه» برقم: 1637، 1638، وأحمد فى «مسنده» برقم: 11436، 11571، وأبو يعلى فى «مسنده» برقم: 1114، 1289، والطبراني فى «الأوسط» برقم: 3560»