This is an adjective (نعت) that follows "أوقات" in its case, meaning it is also in the genitive case (نعت مجرور وعلامة جره الكسرة).
اسم مجرور وعلامة جره الكسرة. This is an adjective (نعت) that follows "أوقات"
"One day, I will throw longing into this needle too." This is an adjective (نعت) that follows "أوقات"
تعريف و معنى على فترات متباعدة في معجم المعاني الجامع This is an adjective (نعت) that follows "أوقات"
And then, perhaps, live it just a little more fully.