Jurists differ about the specificity required in intending an obligatory fast of Ramadan. In the Hanafi reasoning under discussion, a designated Ramadan day can itself identify the duty for an ordinarily obligated resident, making basic fasting intention sufficient in certain cases.
The Shafiʿi approach requires a different degree of specification for obligatory fasting. The rules of one school must not be presented as universal agreement.
The incorrect conclusion would be, “No intention is needed in Ramadan.” The disagreement concerns specifying the kind of fast in particular circumstances, not eliminating the need for fasting intention itself.
Dispensations due to illness or travel introduce further legal distinctions.