أَخُوضُ الْغِمَارَ لِأَجْنِيَ الثِّمَارَ
I plunged into depths in order to gather fruits.
Ghimār evokes deep waters or dangerous situations; thimār literally means fruits but here suggests gains from effort. The danger and its hoped-for reward form the central contrast.
The verbs akhūḍu / ajniya express action and purpose. The lām before *ajniya* indicates why the narrator takes risks.
وَأَقْتَحِمُ الْأَخْطَارَ لِكَيْ أُدْرِكَ الْأَوْطَارَ
I entered dangers to attain my aims. The akhṭār/awṭār sound pairing continues the opening rhythm.