Understanding and application

What does صَوْمُ الدَّهْرِ كُلِّهِ emphasize here?

Sincerity, Trust in Knowledge, Social Reform, and Responsibility (Hadith 229–238)

• The irreplaceable special merit of a Ramadan day
• All makeup obligations are canceled
• Permission to omit Ramadan fasting
• Obligatory fasting every day forever