My beloved ﷺ advised me to do three things which I will never abandon as long as I live, to fast three days of every month, to pray the Duha prayer, and not to sleep until I have prayed Witr.
أوصاني حبيبي ﷺ بثلاث لن أدعهن ما عشت: بصيام ثلاثة أيام من كل شهر، وصلاة الضحى، وبأن لا أنام حتى أوتر.
Muslim narrated it in "The Prayer" (722) through several routes from Ibn Abu Fudayk, from Dahhak bin Uthman, from Ibrahim bin Abdullah bin Hunain, from Abu Mura the freedman of Umm Hani, from Abu Darda, who mentioned it.