Alā attracts attention as an opening particle. Inʿam ṣabāḥan is a conventional expression of greeting and blessing, with ṣabāḥan specifying the morning. Ayyuhā al-rabʿ is a vocative address, and wa-slam wishes continued safety.
The imperative forms are not practical orders: their addressee is an inanimate ruin. Here the imperative becomes a wish or benediction. The paired greetings make the speaker’s attachment to the former dwelling and his sorrow at its loss more perceptible.