فَوَقَفْتُ فِيهَا نَاقَتِي وَكَأَنَّهَا فَدَنٌ لِأَقْضِيَ حَاجَةَ الْمُتَلَوِّمِ
I halted my she-camel there, as if it were a lofty building, to satisfy the longing of one who delays his departure.
Fadan is a lofty structure. Comparing the halted camel to it emphasizes height and stillness.
Al-mutalawwim is someone who lingers or deliberately delays. In the context it expresses the poet’s own reluctance to leave a place saturated with recollection.