Sunan Abi Dawud 2571
سنن أبي داود#2571Sahihحَدَّثَنَا عَمْرُو بْنُ عَلِيٍّ، حَدَّثَنَا خَالِدُ بْنُ يَزِيدَ، حَدَّثَنَا أَبُو جَعْفَرٍ الرَّازِيُّ، عَنِ الرَّبِيعِ بْنِ أَنَسٍ، عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " عَلَيْكُمْ بِالدُّلْجَةِ فَإِنَّ الأَرْضَ تُطْوَى بِاللَّيْلِ " .
Anas reported the Apostle of Allaah(ﷺ) as saying “Keep to travelling by night, for the earth is traversed (more easily) by night
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih Lighairihi
Zubair Ali ZaiHasan
In-book reference: 15:95