Sunan an-Nasa'i 1785
سنن النسائي#1785SahihIt was narrated from Sa'd bin Jubair, from Al-Aswad bin Yazid, that Aishah said:"The Messenger of Allah (ﷺ) said: 'Whoever has the habit of praying at night but he sleeps and misses it, that is a charity that Allah (SWT) has given to him, and the reward of his prayer will be recorded for him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 20:188