What is the ruling on saying "baraka Allah 'alayki" (بارك الله عليكِ) - with the kasra on the kaf - to a female, and is there any harm in that, and is it obligatory to repeat the blessing for all that has passed?

If someone says in their supplication to a woman, "May Allah bless you" (بارك الله عليكِ) but mispronounces it as "alayki" (عليكّ) by mistake, there is no harm in that. Grammatical errors (laḥn) in supplication do not affect its acceptance, for Allah, the Exalted, hears and answers the prayers of the sincere, whether they are grammatically correct or incorrect. The supplicant should not force grammatical correctness if it is not their habit, for Allah knows the intention and purpose of the supplicant, even if their tongue is not eloquent.