Sahih al-Bukhari · Hadith 1135

Prayer at Night (Tahajjud)

Narrated Abu-Wail: `Abdullah said, "One night I offered the Tahajjud prayer with the Prophet (ﷺ) and he kept on standing till an ill-thought came to me." We said, "What was the ill-thought?" He said, "It was to sit down and leave the Prophet (standing)