It Is Haula' bint Tuwait and they say that she does not sleep at night. Upon this the Messenger of Allah ﷺ said: (Oh) she does not sleep at night! Choose an act which you are capable of doing (continuously). By Allah, Allah would not grow weary, but you will grow weary. (Using translation from Muslim 785a)
الْحَوْلَاءَ بِنْتَ تُوَيْتِ بْنِ حَبِيبِ بْنِ أَسَدِ بْنِ عَبْدِ الْعُزَّى مَرَّتْ بِهَا وَعِنْدَهَا رَسُولُ اللهِ ﷺ فَقُلْتُ هَذِهِ الْحَوْلَاءُ بِنْتُ تُوَيْتٍ وَزَعَمُوا أَنَّهَا لَا تَنَامُ اللَّيْلَ فَقَالَ رَسُولُ اللهِ ﷺ وَلِمَ لَا تَنَامُ اللَّيْلَ؟ خُذُوا مِنَ الْعَمَلِ مَا تُطِيقُونَ فَوَاللهِ لَا يَسْأَمُ اللهُ حَتَّى تَسْأَمُوا