How many prayers were obligatory in the early days of Islam?

اسلام کے ابتدائی دور میں کتنی نمازیں فرض تھی؟

None of these

In the early days of Islam, only two prayers (Fajr and Asr) were obligatory.

Later, during the Miraj (Ascension) of Prophet Muhammad (PBUH), the five daily prayers were made compulsory.