In which battle 3 caliphs martyred due to the lake of water?

In which battle 3 caliphs martyred due to the lake of water?

پانی کی جھیل کی وجہ سے 3 خلیفہ کس جنگ میں شہید ہوئے؟
Explanation

In Ghazwa e khyber 3 caliphs were martyred due to the lake of water

The Battle of Khaybar was fought in the year 628 between Muslims and the Jews living in the oasis of Khaybar,

The Battle of Khaybar Start date: 629 AD
The Battle of Khaybar Location: 
Khaybar, Saudi Arabia
The Battle of Khaybar End date: 
629 AD
The Battle of Khaybar Result: 
Muslim victory

How many Jews were killed in the Battle of Khyber? 93

How many Muslims got martyrdom in the battle of Khyber? 15

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