Q: What is the ruling on
sitting half under the shade and half under the sun?
Sitting under shade and sun at the same time is Makruh (disliked) because the Prophet (peace be upon him) forbade it,
as related by
Ibn Majah with a good Sanad (chain of narrators).
It is authentically reported that the Prophet (peace be upon him) called it the "Sitting of Satan."
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.