There are no restrictions on reading the Bhagavad Gita during menstruation. The Bhagavad Gita is a sacred text that offers spiritual guidance and wisdom, and it is available for anyone to read and learn from, regardless of their menstrual cycle.
The idea that certain activities are forbidden during menstruation is often rooted in cultural beliefs and traditions, which may vary widely. However, the Bhagavad Gita itself does not contain any prohibitions on reading the text during menstruation.
It is important to note that personal beliefs and practices may differ, and individuals should follow their own understanding and guidance.