Sunan an-Nasai 18901
In-book no 4165أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا يَعْقُوبُ، عَنْ أَبِي حَازِمٍ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " عَلَيْكَ بِالطَّاعَةِ فِي مَنْشَطِكَ وَمَكْرَهِكَ وَعُسْرِكَ وَيُسْرِكَ وَأَثَرَةٍ عَلَيْكَ " .
It was narrated from Abu Hurairah that the Messenger of Allah said: "You have to obey when you feel energetic and when you feel tired, during your ease and your hardship, and when others are preferred over you."