Answered by our Shaykh, the ‘Allāmah, the Trustworthy Advisor, Abu ‘Abdirrahmān Yahya bin ‘Ali Al-Hajūri – may Allāh preserve him – on the 9th, Muharram, 1442H
Whoever misses out on fasting the 9th, is it legislated for him to fast the 10th?
Yes, it’s legislated even if it’s alone, and if it coinsides with a day of Sabt (Saturday).
Nobody should feel at odds with fasting Yawm us-Sabt (Saturdays) alone, for indeed the hadith which has in it the prohibition of fasting on Sabt except in that which Allāh has made obligatory upon you is a defectious hadith, the huffāth declared it Munkar.
Translated by: Abū ‘Abdillāh ‘Omar bin Yahya Al-‘Akawi
Click on the link to view the Arabic: https://t.me/sh_yahia_duroos/7720