https://torontodawah.com/the-ruling-on-standing-up-after-the-first-tasleem-and-not-the-second-tasleem-of-the-imaam-if-one-joins-the-prayer-late-shaykh-ibn-uthaymeen-and-shaykh-bin-baz/
The Ruling On Standing Up After The First Tasleem And Not The Second Tasleem Of The Imaam If One Joins The Prayer Late - Shaykh Ibn Uthaymeen And Shaykh Bin Baz