Amr bin Murrah bin 'Abdullah عمرو بن مرة بن عبد الله بن طارق · The Book on Virtues of Jihad

"Salman Al-Farisi passed by Shurahbil bin As-Simt while he was in garrison in which he and his companions were suffering from difficulties. He said to him: 'Shall I narrate to you - O Ibn As-Simt - a Hadith I heard from the Messenger of Allah (ﷺ) ?' He said: 'Of course.' He said: 'I heard the Messenger of Allah (ﷺ) saying: "(Ribat) Guarding the frontier for a day in the cause of Allah is more virtuous" - and perhaps he…