Hadith 1295B2

قَالَ مَالِك: وَإِنَّمَا ذَلِكَ أَمْرٌ أَذِنَ اللَّهُ عَزَّ وَجَلَّ فِيهِ لِلنَّاسِ وَلَيْسَ بِوَاجِبٍ عَلَيْهِمْ .¤
Imam Malik, may Allah have mercy on him, says: This is also an imperative form, but here Allah Almighty has granted people permission in this matter. This command has not been made obligatory for them.
Hadith Reference موطا امام مالك رواية يحييٰ / كتاب المكاتب / 1295B2
Hadith Takhrij «فواد عبدالباقي نمبر: 39 - كِتَابُ الْمُكَاتَبِ-ح: 3ق2»