Mishkat al-Masabih 1 Faith كتاب الإيمان 168

وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ تَمَسَّكَ بِسُنَّتِي عِنْدَ فَسَادِ أُمَّتِي فَلَهُ أجر مائَة شَهِيد»

Abu Huraira reported God’s messenger as Saying, “He who holds fast to my sunna when my people are in a corrupt state will have the reward of a hundred martyrs.” 1 1 The source is lacking. The editor of Damascus edition quotes Mirak Shah and others as saying Bayhaqi gives the tradition in his kitab az-Zuhd as coming from Ibn Abbas.