The Sufficient (Vol 4) · Hadith 1985 (#Ḥadīth #6)
Chapter 201 | Excellence of Performing Salat (Prayer) in Masjid al-Haram (the Sacred Masjid) and the Best Place Therein
6ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ النَّوْفَلِيِّ عَنِ السَّكُونِيِّ عَنْ أَبِي عَبْدِ الله عَنْ آبَائِهِ (عَلَيْهِم السَّلاَم) قَالَ الصَّلاةُ فِي الْمَسْجِدِ الْحَرَامِ تَعْدِلُ مِائَةَ أَلْفِ صَلاةٍ.
6. Ali ibn Ibrahim has narrated from his father from al-Nawfaliy from al-Sakuniy who has said the following: “Abu ‘Abd Allah , has narrated from his ancestors, ‘Alayhim al-Salam, who have said that performing Salat (prayer) in Masjid al-Haram is equal to one hundred thousand Salat (prayer) elsewhere.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).