سنن ابن ماجه

It was narrated that ‘Abdullah bin Zubair said: “Uthman bin ‘Affan addressed the people and said: ‘O people! I heard a Hadith from the Messenger of Allah (ﷺ) and nothing kept me from narrating it to you except for the fact that I did not want to lose you and your companionship. So it is up to you. I heard the Messenger of Allah (ﷺ) saying: “Whoever spends a night guarding the frontier in the cause of Allah, it will be like a thousand nights spent in fasting and prayer.”