فَلْيَعْبُدُوا رَبَّ هَذَا الْبَيْتِ
So let them worship the Lord of this House.
The inflectional nūn of يَعْبُدُونَ is removed in the jussive form يَعْبُدُوا.
وَلْيَكْتُبْ بَيْنَكُمْ كَاتِبٌ بِالْعَدْلِ
Let a writer write between you with justice.
The final consonant of يَكْتُبْ bears sukun. Both examples express the desired action through Lam al-Amr.
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فَلْيَعْبُدُوا رَبَّ هَذَا الْبَيْتِ
So let them worship the Lord of this House.
The inflectional nūn of يَعْبُدُونَ is removed in the jussive form يَعْبُدُوا.
وَلْيَكْتُبْ بَيْنَكُمْ كَاتِبٌ بِالْعَدْلِ
Let a writer write between you with justice.
The final consonant of يَكْتُبْ bears sukun. Both examples express the desired action through Lam al-Amr.