حَدَّثَنَا مُحَمَّدُ بْنُ أَبِي عُمَرَ الْعَدَنِيُّ، حَدَّثَنَا عَبْدُ الرَّحِيمِ بْنُ زَيْدٍ الْعَمِّيِّ، عَنْ أَبِيهِ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏"‏ مَنْ أَدْرَكَ رَمَضَانَ بِمَكَّةَ فَصَامَ وَقَامَ مِنْهُ مَا تَيَسَّرَ لَهُ كَتَبَ اللَّهُ لَهُ مِائَةَ أَلْفِ شَهْرِ رَمَضَانَ فِيمَا سِوَاهَا ‏.‏ وَكَتَبَ اللَّهُ لَهُ بِكُلِّ يَوْمٍ عِتْقَ رَقَبَةٍ وَكُلِّ لَيْلَةٍ عِتْقَ رَقَبَةٍ وَكُلِّ يَوْمٍ حُمْلاَنَ فَرَسٍ فِي سَبِيلِ اللَّهِ وَفِي كُلِّ يَوْمٍ حَسَنَةً وَفِي كُلِّ لَيْلَةٍ حَسَنَةً ‏"‏ ‏.‏

It wasnarrated from Ibn ‘Abbas that the Messenger of Allah (PBUH)said: “Whoever is in Makkah when the month of Ramadan comes, and hefastsit and prays at night as much as he can, Allah will record forhim(reward equivalent to that for) one hundred thousand months ofRamadan observed elsewhere. For each day Allah will record for him(reward equivalent to that for) freeing a slave, and for each day(reward equivalent to that for) providing a horse in the cause ofAllah, and for every day merits and for every night merits.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 25 Hadith 3117
Web Ref:  Sunan Ibn Majah Vol 4 Book 25 Hadith 3117