1) Can we pray in black clothes during the normal days ( not Azadari) or it is makrooh?

2) What is the meaning of “ the jurist “ in ruling 852 of islamic laws of him.
The ruling 852 is his own opinion or other jurist opinion? If fatawa mention “ some scholars “ ,” the jurist “ what does it actually mean?

1) Yes, you can pray in black clothes during normal days, but it is not recommended (Makrooh)
2) It means that yes, that is his opinion too