Sunan Ibn Majah
1108
Sahih+3

‘Alqamah narrated that ‘Abdullah was asked whether the Prophet (ﷺ) used to deliver the sermon standing or sitting. He said:“Have you not read the Verse: ‘...and leave you (Muhammad) standing (while delivering the Friday sermon?” [62:)

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi