حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا جَرِيرٌ، عَنْ أَبِي جَنَابٍ، عَنْ مَغْرَاءٍ الْعَبْدِيِّ، عَنْ عَدِيِّ بْنِ ثَابِتٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَنْ سَمِعَ الْمُنَادِيَ فَلَمْ يَمْنَعْهُ مِنَ اتِّبَاعِهِ عُذْرٌ ‏"‏ ‏.‏ قَالُوا وَمَا الْعُذْرُ قَالَ خَوْفٌ أَوْ مَرَضٌ ‏"‏ لَمْ تُقْبَلْ مِنْهُ الصَّلاَةُ الَّتِي صَلَّى ‏"‏ ‏.‏ قَالَ أَبُو دَاوُدَ رَوَى عَنْ مَغْرَاءٍ أَبُو إِسْحَاقَ ‏.‏

Narrated Abdullah ibn Abbas: If anyone hears him who makes the call to prayer and is not prevented from joining the congregation by any excuse--he was asked what an excuse consisted of and replied that it was fear or illness--the prayer he offers will not be accepted from him. Translation Not Available

Book Ref: Sunan Abi Dawud Book 2 Hadith 551
Web Ref:  Sunan Abi Dawud Book 2 Hadith 551