The Messenger of Allah ﷺ said, "Every person's deeds come to an end when he dies, except for the one stationed at the frontier in the path of Allah. His deeds continue to grow for him, and his provision keeps flowing to him until the Day of Resurrection."
قال رسول الله ﷺ: كل عمل ينقطع عن صاحبه إذا مات إلا المرابط في سبيل الله، فإنه ينمى له عمله، ويجرى عليه رزقه إلى يوم القيامة.
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Tabarani narrated it in Kabir (18/256–257), Fasawi in Marifah wal-Tarikh (2/348), and Ibn Abu Asim in Jihad (296), all of them through routes from Abu Mutee Muawiya bin Yahya Atrabulsi, from Buhayr bin Saad, from Khalid bin Madan, from Jubayr bin Nufayr, Kathir bin Mura, and Amr bin Aswad, from Irbaz bin Sariya, who related it.Its chain is hasan because of Abu Mutee Muawiya bin Yahya Atrabulsi, for he is hasan al-hadith. Munziri said in Targhib wal-Tarhib (1925), "Tabarani narrated it in Kabir with two chains, the narrators of one of them being trustworthy." Haythami followed him in Majma al-Zawaid (5/290).Standing guard in the path of Allah is considered a form of ongoing charity.On this subject there is also a hadith from Uthman bin Affan, who said, I heard the Messenger of Allah ﷺ say, "One day of guard duty in the path of Allah is better than a thousand days spent elsewhere at other posts." Tirmidhi narrated it (1667), Nasai (3169, 3170), and Ahmad (442, 470, 558), and Ibn Hibban graded it sahih (4609), as did Hakim (2/68 and 2/143–144), all of them through routes from Zahra bin Mabad, from Abu Salih the freedman of Uthman, who said, I heard Uthman while he was on the pulpit saying, "I concealed from you a hadith I heard from the Messenger of Allah out of dislike that you would scatter away from me, but then it occurred to me that I should relate it to you so that each person may choose for himself whatever he wishes. I heard the Messenger of Allah ﷺ say," and he related it.Tirmidhi said, "This is a hasan gharib hadith from this route." Hakim said in the first place, "This is a hadith with a sahih chain according to the criterion of Bukhari, though the two of them did not include it." And he said in the second place, "Its chain is sahih, though the two of them did not include it."I say, in its chain is Abu Salih the freedman of Uthman, for whom Muslim did not narrate anything, rather only Tirmidhi and Nasai narrated from him. His name is Harith, and he is also said to be Barkan with a plain letter ba. Ajli said in his Thiqat (p. 501), "Zahra bin Mabad narrated from him, and the people of Egypt consider him trustworthy." Ibn Hibban mentioned him in his Thiqat (4/84), and for this reason Ibn Hajar said he is "acceptable," meaning when corroborated.He has a corroborator, though it does not serve to strengthen the hadith, and that is what Ahmad narrated (433, 463), and Ibn Abu Asim in Jihad (151), through routes from Kahmas bin Hasan, from Musab bin Thabit bin Abdullah bin Zubayr, from Uthman, with the wording, "Guarding for one night in the path of Allah is better than a thousand nights spent in night prayer and days spent in fasting." Except that Musab bin Thabit is lain al-hadith, and moreover he never met Uthman, for he was born about fifty years after Uthman was killed.Some of them narrated it from Kahmas bin Hasan, from Musab bin Thabit, from Abdullah bin Zubayr, from Uthman bin Affan. Ibn Abu Asim narrated it in Jihad (150), and Hakim (2/81). Hakim said, "This is a hadith with a sahih chain, though the two of them did not include it."I say, it has several flaws. First, Musab bin Thabit bin Abdullah bin Zubayr is lain al-hadith. Second, this Musab never met his grandfather Abdullah bin Zubayr, for Abdullah bin Zubayr was killed in the year seventy-three, while Musab bin Thabit was born in the year eighty-four and died in the year one hundred fifty at the age of seventy-three, and for this reason Mizzi treated his narration from his grandfather as mursal. Third, there is disagreement over it regarding Kahmas, and Daraqutni set out the disagreement over Kahmas and over the narrators from him, then he gave preference to the version that does not mention Abdullah bin Zubayr, saying, "This is the preserved version." See Ilal Daraqutni (3/36–37), and this preserved version still carries the two flaws already explained.Ibn Majah narrated it (2766) from Hisham bin Ammar, from Abdul-Rahman bin Zayd bin Aslam, from his father, from Musab bin Thabit, from Abdullah bin Zubayr, from Uthman, who related it. And Abdul-Rahman bin Zayd is daif.