Complex sentence: In the Muslim chronicles the third day of the Battle is known as "Yaum-ul-Amas" and the night as Lailat-ul-Harir, meaning the "Night of Rumbling Noises".
Split into simpler sentences: In the Muslim chronicles the third day of the Battle is known as "Yaum-ul-Amas". The night was called Lailat-ul-Harir, meaning the "Night of Rumbling Noises".