The Messenger of Allah ﷺ said, "Standing guard for a single day on the frontier in the path of Allah, defending the vulnerable points of the Muslims, seeking reward from Allah, outside the month of Ramadan, carries a greater reward than a hundred years of worship spent in fasting and prayer. And standing guard for a single day on the frontier in the path of Allah, defending the vulnerable points of the Muslims, seeking reward from Allah, during the month of Ramadan is more excellent in the sight of Allah and greater in reward," and I think he said, "than a thousand years of worship spent in fasting and prayer. If Allah returns him safely to his family, no sin will be recorded against him for a thousand years, good deeds will be recorded for him, and the reward of standing guard at the frontier will continue to flow to him until the Day of Resurrection."
حدثنا محمد بن إسمعيل بن سمرة حدثنا محمد بن يعلى السلمي حدثنا عمر بن صبح عن عبد الرحمن بن عمرو عن مكحول
قال رسول الله ﷺ لرباط يوم في سبيل الله من وراء عورة المسلمين محتسبا من غير شهر رمضان أعظم أجرا من عبادة مائة سنة صيامها وقيامها ورباط يوم في سبيل الله من وراء عورة المسلمين محتسبا من شهر رمضان أفضل عند الله وأعظم أجرا أراه قال من عبادة ألف سنة صيامها وقيامها فإن رده الله إلى أهله سالما لم تكتب عليه سيئة ألف سنة وتكتب له الحسنات ويجرى له أجر الرباط إلى يوم القيامة
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[Its chain is extremely daif, fabricated]. Busiri graded it daif because of the weakness of Muhammad bin Yaala, mentioned previously, kh: 1242, and his teacher Umar bin Subh, h: 2701, which contains another defect. Munziri said, "The marks of fabrication are evident in it." Ibn Kathir said, "This hadith is most likely to be fabricated." ... ... etc.