Rule 1: 1. The optative perfect: blessings
A perfect verb, usually with اللّٰهُ as subject, expresses a wish or prayer: رَحِمَهُ اللّٰهُ may God have mercy on him (said of the dead), بَارَكَ اللّٰهُ فِيكَ God bless you (a thank-you), حَفِظَكَ اللّٰهُ may God keep you, أَطَالَ اللّٰهُ عُمْرَكَ may God lengthen your life, جَزَاكَ اللّٰهُ خَيْرًا may God reward you with good, غَفَرَ اللّٰهُ لَهُ may God forgive him, سَلَّمَكَ اللّٰهُ may God keep you safe. The kāna-sister دَامَ gives دُمْتَ سَالِمًا may you remain safe and sound (a closing in letters), and دَامَ عِزُّكَ may your glory last. Note the order: verb, object suffix, then اللّٰهُ.
تُوُفِّيَ جَدِّي، رَحِمَهُ اللّٰهُ، قَبْلَ عَامَيْنِ.
tuwuffiya jaddī, raḥimahu llāhu, qabla ʿāmayni
My grandfather, may God have mercy on him, died two years ago.
The standard formula after naming the dead.
— شُكْرًا عَلَى مُسَاعَدَتِكَ. — بَارَكَ اللّٰهُ فِيكَ.
shukran ʿalā musāʿadatika. — bāraka llāhu fīka
— Thank you for your help. — God bless you.
بَارَكَ فِي: Form III with فِي.
حَفِظَكِ اللّٰهُ يَا أُمِّي وَأَطَالَ عُمْرَكِ.
ḥafiẓaki llāhu yā ummī wa-aṭāla ʿumraki
May God keep you, mother, and lengthen your life.
Two optatives joined by وَ; feminine suffix ـكِ.
جَزَاكُمُ اللّٰهُ خَيْرًا عَلَى ضِيَافَتِكُمْ.
jazākumu llāhu khayran ʿalā ḍiyāfatikum
May God reward you well for your hospitality.
جَزَى: defective verb, second object خَيْرًا.
وَالسَّلَامُ عَلَيْكَ، وَدُمْتَ سَالِمًا.
wa-s-salāmu ʿalayka, wa-dumta sāliman
Peace be upon you, and may you remain well.
دَامَ with an accusative predicate, as in lesson 136.