dāl ʿayn wāw
ud’ʿu (verb) = pray
duʿāu (masculine noun) = (is) the supplication, humble prayer
daʿwatu (feminine noun) = (is) supplication, humble prayer
l-duʿāi (masculine noun) = (of) the prayer
ṣād lām wāw
l-ṣalata, l-ṣalati (feminine noun) = (the) prayer
Surah Ar-Rad 13:14
To Him (Allah SWT) is the supplication of truth. And those they call upon besides Him do not respond to them with a thing, except as one who stretches his hands toward water [from afar, calling it] to reach his mouth, but it will not reach it [thus]. And the supplication of the disbelievers is not but in error.
ḥā qāf qāf
l-ḥaqa, l-ḥaqi, l-ḥaqu (masculine noun) = the truth
da’watu alhaqqi = the supplication of truth
Times of prayer as described in the Noble Qur’an :
Surah Al Isra 17:78-79
Establish prayer at the decline of the sun [from its meridian] until the darkness of the night and [also] the Qur’an of dawn. Indeed, the recitation of dawn is ever witnessed.
And from [part of] the night, pray with it as additional [worship] for you; it is expected that your Lord will resurrect you to a praised station.
Surah Taha 20:130
So be patient over what they say and exalt [ Allah ] with praise of your Lord before the rising of the sun and before its setting; and during periods of the night [exalt Him] and at the ends of the day, that you may be satisfied.