عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: أَدْلَجَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مِنَ الْبَطْحَاءِ لَيْلَةَ النَّفْرِ إِدْلَاجًا
It is narrated from Sayyidah Aisha (may Allah be pleased with her) that on the night of departure, the Messenger of Allah (peace and blessings be upon him) stayed at Batha until it became quite dark (then he began the journey).