فَبَعَثْتُ جَارِيَتِي فَقُلْتُ لَهَا اذْهَبِي فَتَجَسَّسِي أَخْبَارَهَا لِي وَاعْلَمِي
So I sent my maid and told her: go, quietly inquire into her news for me, and learn her circumstances.
Baʿathtu is a first-person past verb. Idhhabī, fatajassasī and iʿlamī are feminine singular commands directed to the attendant. Their sequence gives momentum to the narrative: longing becomes an attempt to obtain information. It describes the poet’s conduct rather than prescribing it.