´Abu Sa'eed Al-Khudri narrated:` "The Prophet would pray Ad-Duha until we would say: 'He will not leave it.' And he would leave it until we would say: 'He will not pray it.'"
Hadith ReferenceSunan at-Tirmidhi / The Book on Al-Witr / Hadith: 477
Hadith Gradingالألبانی:صحيح، ابن ماجة (1379) | زبیر علی زئی:(477) إسناده ضعيف, عطية العوفي ضعيف مدلس (د 452)