Change the sentence from direct speech to indirect. He said, "The horse died in the night."

Reporting verb টি past tense এ থাকলে Reported speech এর tense এর নিম্মলিখিত পরিবর্তন করতে হবে। 
Direct    -----------Indirect
Present Indefinite -- Pass indefinite
Present Continuous--Past continuous
Present Perfect--past Perfect
Present Perfect Continuous--p.p.Continous.
Past Indefinite--Past Perfect
Past Continous--Past Perfect Continous

Reporting verbe হিসেবে 'say' Direct and Inderect উভয় specch এ ব্যবহিত হতে পারে।