The word(s) "lentement" appears 2 time(s) in 2 verse(s) in Quran in French (Muhammad Hamidullah) translation.

(1) (Nous avons fait descendre) un Coran que Nous avons fragmenté, pour que tu le lises lentement aux gens. Et Nous l'avons fait descendre graduellement.

(سورة الإسراء, Al-Israa, Chapter #17, Verse #106)
(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) ou un peu plus. Et récite le Coran, lentement et clairement.

(سورة المزمل, Al-Muzzammil, Chapter #73, Verse #4)
(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)