https://torontodawah.com/saying-%d8%b2%d8%af-%d9%88%d8%a8%d8%a7%d8%b1%d9%83-i-e-increase-him-and-bless-him-when-reading-greetings-on-the-messenger-shaykh-saalih-al-fawzaan/
Saying زد وبارك - [i.e Increase Him And Bless Him] When Reading Greetings On The Messenger - Shaykh Saalih Al-Fawzaan