I want to know the answer to the following question:
What part of the area did Jayapala lose?
All the background I'm provided with is that "Jayapala saw a danger in the consolidation of the Ghaznavids and invaded their capital city of Ghazni both in the reign of Sebuktigin and in that of his son Mahmud, which initiated the Muslim Ghaznavid and Hindu Shahi struggles.". Is that enough to answer the question?
Answer: no