بِسْمِ اللَّـهِ الرَّحْمَـٰنِ الرَّحِيم
It is Makruh (disliked) but not Haram, what is recomended is to keep Imsak (Staying with no food) until afternoon.
Are we allowed to do business on the day of Ashura?
It is not Haram but it is recomended to mourn this day and not work, we have a narration from Imam Riza (a.s) "anyone who refreins from working on the day of Ashura Allah will repay him/her by fulfilling his/her worldy and Akhira wishes".
For us Imam Hussein is above life and our parent's life if any of us losses his or her parent his world will stop, it should not be less when it comes to Imam Hussein (a.s) and massacre of Karbala.
*Is it ok to study during the days of Ashura and Tasua (9th) ? It is good but it will be best if you wont miss Majlis of Imam Hussein especially on Ashura.
رَبَّنَا تَقَبَّلْ مِنَّا إِنَّكَ أَنتَ السَّمِيعُ الْعَلِيمُ
اَللَّهُمَّ صَلِّ عَلى مُحَمَّدٍ وَّآلِ مُحَمَّدٍ وَّعَجِّلْ فَرَجَهُمْ
وَالْعَنْ أَعْدَائَهُمْ اَجْمَعِيْن
🤲 اللھم عجل لولیک الفرج(ع)🤲
فی امان لله