70:34

وَالَّذِينَ هُمْ عَلَىٰ صَلَاتِهِمْ يُحَافِظُونَ

Transliteration:

Waallatheena hum AAala salatihim yuhafithoona

Word by Word:

And those who, [they] on their prayer keep a guard -

Translations:

and who guard their prayers [from all worldly intent].

And those who guard (the sacredness) of their worship;-

And those who are attentive at their worship.

And those who keep a guard on their prayer.

And those who [carefully] maintain their prayer: