طَلَبُ كَسْبِ الْحَلَالِ فَرِيضَةٌ بَعْدَ الْفَرِيضَةِ
Seeking lawful earnings is an obligation after the primary obligation.
Source: Bayhaqi.
طَلَبُ means seeking, كَسْبِ earnings, and الْحَلَالِ what is permitted. Together طَلَبُ كَسْبِ الْحَلَالِ means “seeking lawful earnings.” فَرِيضَةٌ means an obligation. بَعْدَ الْفَرِيضَةِ places that duty in relation to the primary religious obligations.
The iḍāfah phrases connect seeking, earning, and what is lawful. The whole expression is the nominal subject (mubtadaʾ), and فَرِيضَةٌ is the predicate (khabar).
Providing for real needs through permissible means is important; accumulating wealth without limit is not the point of the report.