Abu Yusuf and Muhammad classify Witr as sunnah muakkadah. They cite its lack of a separate adhan and iqamah and its legal treatment as signs that its status is not a definitive fard. The disagreement concerns rank, not legitimacy.
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Abu Yusuf and Muhammad: Confirmed Sunnah
Witr Prayer: Three Rakahs, Qunut and Juristic Differences
Abu Yusuf and Muhammad classify Witr as sunnah muakkadah. They cite its lack of a separate adhan and iqamah and its legal treatment as signs that its status is not a definitive fard. The disagreement concerns rank, not legitimacy.