It was narrated from Aishah that:

The Prophet ﷺ came in to her and there was a woman with her. He said: "Who is this?" She said: "So-and-so, and she does not sleep." And she told him about how she prayed a great deal. He said: "Stop praising her. You should do what you can, for by Allah (Subhanahu-wa-Taala), Allah never gets tired (of giving reward) until you get tired. And the most beloved of religious actions to Him is that in which a person persists."

أَخْبَرَنَا شُعَيْبُ بْنُ يُوسُفَ، عَنْ يَحْيَى، عَنْ هِشَامٍ، قَالَ أَخْبَرَنِي أَبِي، عَنْ عَائِشَةَ، أَنَّ النَّبِيَّ ﷺ دَخَلَ عَلَيْهَا وَعِنْدَهَا امْرَأَةٌ فَقَالَ " مَنْ هَذِهِ " . قَالَتْ فُلاَنَةُ لاَ تَنَامُ . فَذَكَرَتْ مِنْ صَلاَتِهَا فَقَالَ " مَهْ عَلَيْكُمْ بِمَا تُطِيقُونَ فَوَاللَّهِ لاَ يَمَلُّ اللَّهُ عَزَّ وَجَلَّ حَتَّى تَمَلُّوا وَلَكِنَّ أَحَبَّ الدِّينِ إِلَيْهِ مَا دَاوَمَ عَلَيْهِ صَاحِبُهُ " .