Shaad means happiness.
Beautifully used in this sher by Sahir Hoshiyarpuri:
Kaun kehta hai mohabbat ki zuban hoti hain
Yeh haqeeqat to nigahon se bayan hoti hain
Who says that love has a language
This truth can only be expressed through a glance, a look
Rooh ko shaad karey dil ko jo purnoor karey…
Har nazaaray mein yeh tanveer kahan hoti hain
One who brings happiness to the soul, fills the heart with light
Where can such radiance be found in every view
Shaad Ali is also an Indian film director with three films to his credit – Saathiya, Bunty aur Babli and Jhoom Barabar Jhom. He is also the son of Muzaffar Ali, who has made classic films like Umrao Jaan, Anjuman and Gaman.