The word(s) "knees" appears 2 time(s) in 2 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) So by your Lord! We will most certainly gather them together and the Shaitans, then shall We certainly cause them to be present round hell on their knees.

(سورة مريم, Maryam, Chapter #19, Verse #68)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(2) And We will deliver those who guarded (against evil), and We will leave the unjust therein on their knees.

(سورة مريم, Maryam, Chapter #19, Verse #72)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)