Sunan an-Nasa'i 818
سنن النسائي#818SahihIt was narrated from Anas that the Messenger of Allah (ﷺ) said:"Complete the first row, then the one behind it, and if any row is to be left incomplete let it be the last row
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: 10:42