Sa'id b. Jubair said that Ibn 'Abbas told him:He (the Prophet) got up and prayed eight rak'ahs in pairs, and then observed witr with five rak'ahs and he did not sit between them
Gradings in the source
SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid
Isnaad SahihZubair Ali Zai
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