[and] who incessantly persevere in their prayer;
 - Mohammad Asad
Mohammad Asad
remain steadfast in their Salah (prayer),
 - Muhammad Farooq-i-Azam Malik
Muhammad Farooq-i-Azam Malik consistently performing their prayers;
 - Mustafa Khattab
Mustafa Khattab
Who are constant at their worship
 - Marmaduke Pickthall
Marmaduke Pickthall Those who remain steadfast to their prayer;
 - Abdullah Yusuf Ali
Abdullah Yusuf Ali